I am in the process of learning PHP and I am trying to start a loop based on the values taken from a MySQL table.
In the MySQL table I have a course name with a start_year and duration. What I would like to achieve is something along the following code example:
$results = $conn->query($sql);
for (int $i = $results as $row['start_year']; $i <= $results as $row['duration']; i++) {
echo "<tr>" . $i . "</tr>";
}
Any help will be greatly appreciated!
Thanks
Code Update:
<thead>
<tr>
<th scope="col" class="wide" >Year</th>
</tr>
</thead>
<!-- Table body -->
<tbody>
<?php
try {
$dsn = "mysql:host=localhost;dbname=".$mysqldatabase;
// try connecting to the database
$conn = new PDO($dsn, $mysqlusername, $mysqlpassword);
// turn on PDO exception handling
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
// enter catch block in event of error in preceding try block
echo "Connection failed: ".$e->getMessage();
}
try {
$sql="SELECT *
FROM courses
WHERE courses.cid = \"". $_GET['courses'] . "\"
ORDER BY courses.title";
$results=$conn->query($sql);
if ($results->rowcount()==0){
} else {
//generate table of results
foreach ($results as $row){
$years=range($row['startYear'],$row['startYear']+$row['duration']-1);
echo "<tr><td>";
echo implode(",",$years."</td></tr>");
}
} catch ( PDOException $e ) {
echo "Query failed: " . $e->getMessage();
}
$conn = null;
?>
You can find this answer on the php manual
$results = $conn->query($sql);
foreach ($results as $row){
$years=range($row['start_year'],$row['start_year']+$row['duration']-1);
echo implode(",",$years)."<br/>";
}
Related
I want to retrieve the values from a database table and show them in a html table in a page.
I already searched for this but I couldn't find the answer, although this surely is something easy (this should be the basics of databases lol). I guess the terms I've searched are misleading.
The database table name is tickets, it has 6 fields right now (submission_id, formID, IP, name, email and message) but should have another field called ticket_number.
How can I get it to show all the values from the db in a html table like this:
<table border="1">
<tr>
<th>Submission ID</th>
<th>Form ID</th>
<th>IP</th>
<th>Name</th>
<th>E-mail</th>
<th>Message</th>
</tr>
<tr>
<td>123456789</td>
<td>12345</td>
<td>123.555.789</td>
<td>John Johnny</td>
<td>johnny#example.com</td>
<td>This is the message John sent you</td>
</tr>
</table>
And then all the other values below 'john'.
Example taken from W3Schools: PHP Select Data from MySQL
<?php
$con=mysqli_connect("example.com","peter","abc123","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$result = mysqli_query($con,"SELECT * FROM Persons");
echo "<table border='1'>
<tr>
<th>Firstname</th>
<th>Lastname</th>
</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row['FirstName'] . "</td>";
echo "<td>" . $row['LastName'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
It's a good place to learn from!
Try this: (Completely Dynamic...)
<?php
$host = "localhost";
$user = "username_here";
$pass = "password_here";
$db_name = "database_name_here";
//create connection
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$connection = mysqli_connect($host, $user, $pass, $db_name);
//get results from database
$result = mysqli_query($connection, "SELECT * FROM products");
$all_property = array(); //declare an array for saving property
//showing property
echo '<table class="data-table">
<tr class="data-heading">'; //initialize table tag
while ($property = mysqli_fetch_field($result)) {
echo '<td>' . $property->name . '</td>'; //get field name for header
$all_property[] = $property->name; //save those to array
}
echo '</tr>'; //end tr tag
//showing all data
while ($row = mysqli_fetch_array($result)) {
echo "<tr>";
foreach ($all_property as $item) {
echo '<td>' . $row[$item] . '</td>'; //get items using property value
}
echo '</tr>';
}
echo "</table>";
Here is an easy way to fetch data from a MySQL database using PDO.
define("DB_HOST", "localhost"); // Using Constants
define("DB_USER", "YourUsername");
define("DB_PASS", "YourPassword");
define("DB_NAME", "Yourdbname");
$dbc = new PDO("mysql:host=".DB_HOST.";dbname=".DB_NAME.";charset-utf8mb4", DB_USER, DB_PASS);
$print = ""; // assign an empty string
$stmt = $dbc->query("SELECT * FROM tableName"); // fetch data
$stmt->setFetchMode(PDO::FETCH_OBJ);
$print .= '<table border="1px">';
$print .= '<tr><th>First name</th>';
$print .= '<th>Last name</th></tr>';
while ($names = $stmt->fetch()) { // loop and display data
$print .= '<tr>';
$print .= "<td>{$names->firstname}</td>";
$print .= "<td>{$names->lastname}</td>";
$print .= '</tr>';
}
$print .= "</table>";
echo $print;
Learn more about PHP and the MySQLi Library at PHP.net.
First, start a connection to the database. Do this by making all the string variables needed in order to connect, adjusting them to fit your environment, then creating a new connection object with new mysqli() and initializing it with the previously made variables as its parameters. Now, check the connection for errors and display a message whether any were found or not. Like this:
<?php
$servername = "localhost";
$username = "root";
$password = "yourPassword";
$database = "world";
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$conn = new mysqli($servername, $username, $password, $database);
echo "Connected successfully<br>";
?>
Next, make a variable that will hold the query as a string, in this case its a select statement with a limit of 100 records to keep the list small. Then, we can execute it by calling the mysqli::query() function from our connection object. Now, it's time to display some data. Start by opening up a <table> tag through echo, then fetch one row at a time in the form of a numerical array with mysqli::fetch_row() which can then be displayed with a simple for loop. mysqli::field_count should be self explanatory. Don't forget to use <td></td> for each value, and also to open and close each row with echo"<tr>" and echo"</tr>. Finally we close the table, and the connection as well with mysqli::close().
<?php
$query = "select * from city limit 100;";
$queryResult = $conn->query($query);
echo "<table>";
while ($queryRow = $queryResult->fetch_row()) {
echo "<tr>";
for($i = 0; $i < $queryResult->field_count; $i++){
echo "<td>$queryRow[$i]</td>";
}
echo "</tr>";
}
echo "</table>";
$conn->close();
?>
First, connect to the database:
$conn=mysql_connect("hostname","username","password");
mysql_select_db("databasename",$conn);
You can use this to display a single record:
For example, if the URL was /index.php?sequence=123, the code below would select from the table, where the sequence = 123.
<?php
$sql="SELECT * from table where sequence = '".$_GET["sequence"]."' ";
$rs=mysql_query($sql,$conn) or die(mysql_error());
$result=mysql_fetch_array($rs);
echo '<table>
<tr>
<td>Forename</td>
<td>Surname</td>
</tr>
<tr>
<td>'.$result["forename"].'</td>
<td>'.$result["surname"].'</td>
</tr>
</table>';
?>
Or, if you want to list all values that match the criteria in a table:
<?php
echo '<table>
<tr>
<td>Forename</td>
<td>Surname</td>
</tr>';
$sql="SELECT * from table where sequence = '".$_GET["sequence"]."' ";
$rs=mysql_query($sql,$conn) or die(mysql_error());
while($result=mysql_fetch_array($rs))
{
echo '<tr>
<td>'.$result["forename"].'</td>
<td>'.$result["surname"].'</td>
</tr>';
}
echo '</table>';
?>
Surely a better solution would by dynamic so that it would work for any query without having to know the column names?
If so, try this (obviously the query should match your database):
// You'll need to put your db connection details in here.
$conn = new mysqli($server_hostname, $server_username, $server_password, $server_database);
// Run the query.
$result = $conn->query("SELECT * FROM table LIMIT 10");
// Get the result in to a more usable format.
$query = array();
while($query[] = mysqli_fetch_assoc($result));
array_pop($query);
// Output a dynamic table of the results with column headings.
echo '<table border="1">';
echo '<tr>';
foreach($query[0] as $key => $value) {
echo '<td>';
echo $key;
echo '</td>';
}
echo '</tr>';
foreach($query as $row) {
echo '<tr>';
foreach($row as $column) {
echo '<td>';
echo $column;
echo '</td>';
}
echo '</tr>';
}
echo '</table>';
Taken from here: https://www.antropy.co.uk/blog/handy-php-snippets/
mysql_connect("localhost","root","");
mysql_select_db("database");
$query=mysql_query("select * from studenti");
$x=#mysql_num_rows($query);
echo "<a href='file.html'>back</a>";
echo "<table>";
$y=mysql_num_fields($query);
echo "<tr>";
for($i=0 ,$i<$y,$i++)
{
$values=mysql_field_name($query,$i);
echo "<th>$values</th>";
}
echo "</tr>";
while(list($p ,$n $your_table_list)=mysql_fetch_row($query))
{
print("<tr>\n".
"<td>$p</td>".
"</tr>/n");
}
?>
<?php
$mysql_hostname = "localhost";
$mysql_user = "ram";
$mysql_password = "ram";
$mysql_database = "mydb";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Oops some thing went wrong");
mysql_select_db($mysql_database, $bd) or die("Oops some thing went wrong");// we are now connected to database
$result = mysql_query("SELECT * FROM users"); // selecting data through mysql_query()
echo '<table border=1px>'; // opening table tag
echo'<th>No</th><th>Username</th><th>Password</th><th>Email</th>'; //table headers
while($data = mysql_fetch_array($result))
{
// we are running a while loop to print all the rows in a table
echo'<tr>'; // printing table row
echo '<td>'.$data['id'].'</td><td>'.$data['username'].'</td><td>'.$data['password'].'</td><td>'.$data['email'].'</td>'; // we are looping all data to be printed till last row in the table
echo'</tr>'; // closing table row
}
echo '</table>'; //closing table tag
?>
it would print the table like this
just read line by line so that you can understand it easily..
OOP Style :
At first connection with database.
<?php
class database
{
public $host = "localhost";
public $user = "root";
public $pass = "";
public $db = "db";
public $link;
public function __construct()
{
$this->connect();
}
private function connect()
{
$this->link = new mysqli($this->host, $this->user, $this->pass, $this->db);
return $this->link;
}
public function select($query)
{
$result = $this->link->query($query) or die($this->link->error.__LINE__);
if($result->num_rows>0)
{
return $result;
}
else
{
return false;
}
}
?>
Then :
<?php
$db = new database();
$query = "select * from data";
$result = $db->select($query);
echo "<table>";
echo "<tr>";
echo "<th>Name </th>";
echo "<th>Roll </th>";
echo "</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td> $row[name]</td>";
echo "<td> $row[roll]</td>";
echo "</tr>";
}
echo "</table>";
?>
I've seen many posts about how to build a table in HTML with PHP and MysSQL, but I often change the headers of MySQL columns after creating a table.
Is there any way for PHP to update the code automatically so that I can just put in the table name and it prints the table without me having to put in all the <th> tags?
<?php
$table = "user";
$database = "database";
$conn = mysqli_connect("localhost", "username", "password", "database", "3306");
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT * FROM $table";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
while ($row = $result->fetch_assoc()) {
echo "<tr><td>" . $row["id"] . "</td><td>" . $row["first_name"] . "</td><td>" . $row["last_name"] . "</td><td>" . $row["birthday"] . "</td></tr>";
}
echo "</table>";
} else {
echo "0 result";
}
$conn->close();
If you want to display the full contents of the database table as an HTML table, I suggest you make a function that will do all of this dynamically for you. This function should check that the table exists, fetch all the data, and fetch output HTML table with headers.
MySQLi solution
Here is my suggestion using MySQLi. First of all, you must make sure that the table actually exists. Then you can fetch all the data from the table. The object returned by mysqli::query() will have all metadata information about column names which you can use to display the header row. You can use fetch_fields() to iterate over each column metadata. The data can be fetched using fetch_all() method.
<?php
// create global connection using mysqli
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$conn = mysqli_connect("localhost", "username", "password", "database", "3306");
$mysqli->set_charset('utf8mb4'); // always set the charset
function outputMySQLToHTMLTable(mysqli $mysqli, string $table)
{
// Make sure that the table exists in the current database!
$tableNames = array_column($mysqli->query('SHOW TABLES')->fetch_all(), 0);
if (!in_array($table, $tableNames, true)) {
throw new UnexpectedValueException('Unknown table name provided!');
}
$res = $mysqli->query('SELECT * FROM '.$table);
$data = $res->fetch_all(MYSQLI_ASSOC);
echo '<table>';
// Display table header
echo '<thead>';
echo '<tr>';
foreach ($res->fetch_fields() as $column) {
echo '<th>'.htmlspecialchars($column->name).'</th>';
}
echo '</tr>';
echo '</thead>';
// If there is data then display each row
if ($data) {
foreach ($data as $row) {
echo '<tr>';
foreach ($row as $cell) {
echo '<td>'.htmlspecialchars($cell).'</td>';
}
echo '</tr>';
}
} else {
echo '<tr><td colspan="'.$res->field_count.'">No records in the table!</td></tr>';
}
echo '</table>';
}
outputMySQLToHTMLTable($mysqli, 'user');
PDO Solution
Using PDO is very similar but you have to pay attention to the differences in the APIs.
To get the table names, you can use fetchAll(PDO::FETCH_COLUMN) instead of array_column(). To get the column metadata, you need to use getColumnMeta() function.
<?php
$pdo = new PDO("mysql:host=localhost;dbname=test;charset=utf8mb4", 'username', 'password', [
\PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION,
\PDO::ATTR_EMULATE_PREPARES => false
]);
function outputMySQLToHTMLTable(pdo $pdo, string $table)
{
// Make sure that the table exists in the current database!
$tableNames = $pdo->query('SHOW TABLES')->fetchAll(PDO::FETCH_COLUMN);
if (!in_array($table, $tableNames, true)) {
throw new UnexpectedValueException('Unknown table name provided!');
}
$stmt = $pdo->query('SELECT * FROM '.$table);
$data = $stmt->fetchAll(PDO::FETCH_ASSOC);
$columnCount = $stmt->columnCount();
echo '<table>';
// Display table header
echo '<thead>';
echo '<tr>';
for ($i = 0; $i < $columnCount; $i++) {
echo '<th>'.htmlspecialchars($stmt->getColumnMeta($i)['name']).'</th>';
}
echo '</tr>';
echo '</thead>';
// If there is data then display each row
if ($data) {
foreach ($data as $row) {
echo '<tr>';
foreach ($row as $cell) {
echo '<td>'.htmlspecialchars($cell).'</td>';
}
echo '</tr>';
}
} else {
echo '<tr><td colspan="'.$columnCount.'">No records in the table!</td></tr>';
}
echo '</table>';
}
outputMySQLToHTMLTable($pdo, 'user');
P.S. The table existence check can be optimized with the following code instead:
$tableNames = $pdo->prepare('SELECT COUNT(1) FROM information_schema.TABLES WHERE TABLE_SCHEMA = SCHEMA() AND TABLE_NAME=?');
$tableNames->execute([$table]);
if (!$tableNames->fetchColumn()) {
throw new UnexpectedValueException('Unknown table name provided!');
}
I just read your question, and coded to meet your needs, but I used PDO and not MYSQLI, maybe it is better for you to understand the code, because with PDO everything is simpler. And the way I did it, you don't need to put all the tags, PHP will update automatically, and know that the file must end with the extension .php!
<?php
$conn = new PDO("mysql:host=localhost;dbname=YOUR_DATABASE_HERE", "USERNAME", "PASSWORD");
if(!$conn){
echo "Could not connect!";
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
table, th, td {
border: 1px solid black;
}
</style>
</head>
<body>
<table style="width:100%;">
<thead>
<tr>
<th>ID</th>
<th>FirstName</th>
<th>LastName</th>
<th>Birthday</th>
</tr>
</thead>
<tbody>
<?php
$sql = "SELECT * FROM user";
$result = $conn->prepare($sql);
$result->execute();
if($result->rowCount() > 0):
$rows = $result->fetchAll();
foreach($rows as $row):
?>
<tr>
<td><?php echo $row['id']; ?></td>
<td><?php echo $row['first_name']; ?></td>
<td><?php echo $row['last_name']; ?></td>
<td><?php echo $row['birthday']; ?></td>
</tr>
</tbody>
<?php
endforeach;
endif;
?>
</table>
</body>
</html>
I want to convert this bellow two MySQL query(specially second query) in PostgreSQL query.because I want to use this bellow query for PostgreSQL database.So how can i write this bellow query in PostgreSQL.So that this bellow query support PostgreSQL Database.
<?php
$data = [];
$branchs = [];
$query=mysqli_query($con,"SELECT DISTINCT branchcode FROM brackinfo2 WHERE event_id BETWEEN 71 AND 75");
while($values=mysqli_fetch_array($query)){
$branchs[] = $values['branchcode'];
}
$query=mysqli_query($con,"SELECT CONCAT(section,'.', sub_sec_id) AS si, GROUP_CONCAT (CONCAT(branchcode,':',question_point)) as brands, section, sub_sec_id, point as fullmark FROM brackinfo2 WHERE event_id BETWEEN 71 AND 75 GROUP BY branchcode,si");
while($values=mysqli_fetch_array($query)){
$data[$values['si']]['fullmark'] = $values['fullmark'];
$data[$values['si']]['section'] = $values['section'];
$tmp = explode(",", $values['brands']);
foreach ($tmp as $key => $value) {
$tmp2 = explode(":", $value);
$data[$values['si']]['branchs'][$tmp2[0]] = $tmp2[1];
}
}
?>
<table>
<thead>
<tr>
<th>SI</th>
<th>Full Marks</th>
<th>Section & Indicator Name</th>
<?php
foreach ($branchs as $branch) {
echo "<th> Branch Name<br>($branch)</th>";
}?>
</tr>
</thead>
<tbody>
<?php
foreach ($data as $si => $info)
{
echo "<tr>";
echo "<td>$si</td>";
echo "<td>{$info['fullmark']} </td>";
echo "<td>{$info['section']} </td>";
foreach( $branchs as $branch)
{
if (isset($info['branchs'][$branch])) {
echo "<td>{$info['branchs'][$branch]}</td>";
} else {
echo "<td></td>";
}
}
echo "</tr>";
}
?>
</tbody>
</table>
You need to use PHP PDO to support both MYSQL and POSTGRESQL with same query(most of the case) OR use pg_connect(), pg_query() and pg_fetch_array() specifically for postgresql only. See here for more about PHP PDO query examples
Connection example in MYSQL:
<?php
try {
$dbuser = 'mysql';
$dbpass = 'abc123';
$dbhost = 'localhost';
$dbname='mysql';
$dbh = new PDO('mysql:host=$dbhost;dbname=$dbname', $dbuser, $dbpass);
}catch (PDOException $e){
echo "Error!: " . $e->getMessage() . "<br/>";
die();
}
?>
Connection example in POSTGRESQL:
<?php
try{
$dbuser = 'postgres';
$dbpass = 'abc123';
$dbhost = 'localhost';
$dbname='postgres';
$dbh = new PDO("pgsql:host=$dbhost;dbname=$dbname", $dbuser, $dbpass);
}catch (PDOException $e){
echo "Error : " . $e->getMessage() . "<br/>";
die();
}
?>
I want to retrieve the values from a database table and show them in a html table in a page.
I already searched for this but I couldn't find the answer, although this surely is something easy (this should be the basics of databases lol). I guess the terms I've searched are misleading.
The database table name is tickets, it has 6 fields right now (submission_id, formID, IP, name, email and message) but should have another field called ticket_number.
How can I get it to show all the values from the db in a html table like this:
<table border="1">
<tr>
<th>Submission ID</th>
<th>Form ID</th>
<th>IP</th>
<th>Name</th>
<th>E-mail</th>
<th>Message</th>
</tr>
<tr>
<td>123456789</td>
<td>12345</td>
<td>123.555.789</td>
<td>John Johnny</td>
<td>johnny#example.com</td>
<td>This is the message John sent you</td>
</tr>
</table>
And then all the other values below 'john'.
Example taken from W3Schools: PHP Select Data from MySQL
<?php
$con=mysqli_connect("example.com","peter","abc123","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$result = mysqli_query($con,"SELECT * FROM Persons");
echo "<table border='1'>
<tr>
<th>Firstname</th>
<th>Lastname</th>
</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row['FirstName'] . "</td>";
echo "<td>" . $row['LastName'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
It's a good place to learn from!
Try this: (Completely Dynamic...)
<?php
$host = "localhost";
$user = "username_here";
$pass = "password_here";
$db_name = "database_name_here";
//create connection
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$connection = mysqli_connect($host, $user, $pass, $db_name);
//get results from database
$result = mysqli_query($connection, "SELECT * FROM products");
$all_property = array(); //declare an array for saving property
//showing property
echo '<table class="data-table">
<tr class="data-heading">'; //initialize table tag
while ($property = mysqli_fetch_field($result)) {
echo '<td>' . $property->name . '</td>'; //get field name for header
$all_property[] = $property->name; //save those to array
}
echo '</tr>'; //end tr tag
//showing all data
while ($row = mysqli_fetch_array($result)) {
echo "<tr>";
foreach ($all_property as $item) {
echo '<td>' . $row[$item] . '</td>'; //get items using property value
}
echo '</tr>';
}
echo "</table>";
Here is an easy way to fetch data from a MySQL database using PDO.
define("DB_HOST", "localhost"); // Using Constants
define("DB_USER", "YourUsername");
define("DB_PASS", "YourPassword");
define("DB_NAME", "Yourdbname");
$dbc = new PDO("mysql:host=".DB_HOST.";dbname=".DB_NAME.";charset-utf8mb4", DB_USER, DB_PASS);
$print = ""; // assign an empty string
$stmt = $dbc->query("SELECT * FROM tableName"); // fetch data
$stmt->setFetchMode(PDO::FETCH_OBJ);
$print .= '<table border="1px">';
$print .= '<tr><th>First name</th>';
$print .= '<th>Last name</th></tr>';
while ($names = $stmt->fetch()) { // loop and display data
$print .= '<tr>';
$print .= "<td>{$names->firstname}</td>";
$print .= "<td>{$names->lastname}</td>";
$print .= '</tr>';
}
$print .= "</table>";
echo $print;
Learn more about PHP and the MySQLi Library at PHP.net.
First, start a connection to the database. Do this by making all the string variables needed in order to connect, adjusting them to fit your environment, then creating a new connection object with new mysqli() and initializing it with the previously made variables as its parameters. Now, check the connection for errors and display a message whether any were found or not. Like this:
<?php
$servername = "localhost";
$username = "root";
$password = "yourPassword";
$database = "world";
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$conn = new mysqli($servername, $username, $password, $database);
echo "Connected successfully<br>";
?>
Next, make a variable that will hold the query as a string, in this case its a select statement with a limit of 100 records to keep the list small. Then, we can execute it by calling the mysqli::query() function from our connection object. Now, it's time to display some data. Start by opening up a <table> tag through echo, then fetch one row at a time in the form of a numerical array with mysqli::fetch_row() which can then be displayed with a simple for loop. mysqli::field_count should be self explanatory. Don't forget to use <td></td> for each value, and also to open and close each row with echo"<tr>" and echo"</tr>. Finally we close the table, and the connection as well with mysqli::close().
<?php
$query = "select * from city limit 100;";
$queryResult = $conn->query($query);
echo "<table>";
while ($queryRow = $queryResult->fetch_row()) {
echo "<tr>";
for($i = 0; $i < $queryResult->field_count; $i++){
echo "<td>$queryRow[$i]</td>";
}
echo "</tr>";
}
echo "</table>";
$conn->close();
?>
First, connect to the database:
$conn=mysql_connect("hostname","username","password");
mysql_select_db("databasename",$conn);
You can use this to display a single record:
For example, if the URL was /index.php?sequence=123, the code below would select from the table, where the sequence = 123.
<?php
$sql="SELECT * from table where sequence = '".$_GET["sequence"]."' ";
$rs=mysql_query($sql,$conn) or die(mysql_error());
$result=mysql_fetch_array($rs);
echo '<table>
<tr>
<td>Forename</td>
<td>Surname</td>
</tr>
<tr>
<td>'.$result["forename"].'</td>
<td>'.$result["surname"].'</td>
</tr>
</table>';
?>
Or, if you want to list all values that match the criteria in a table:
<?php
echo '<table>
<tr>
<td>Forename</td>
<td>Surname</td>
</tr>';
$sql="SELECT * from table where sequence = '".$_GET["sequence"]."' ";
$rs=mysql_query($sql,$conn) or die(mysql_error());
while($result=mysql_fetch_array($rs))
{
echo '<tr>
<td>'.$result["forename"].'</td>
<td>'.$result["surname"].'</td>
</tr>';
}
echo '</table>';
?>
Surely a better solution would by dynamic so that it would work for any query without having to know the column names?
If so, try this (obviously the query should match your database):
// You'll need to put your db connection details in here.
$conn = new mysqli($server_hostname, $server_username, $server_password, $server_database);
// Run the query.
$result = $conn->query("SELECT * FROM table LIMIT 10");
// Get the result in to a more usable format.
$query = array();
while($query[] = mysqli_fetch_assoc($result));
array_pop($query);
// Output a dynamic table of the results with column headings.
echo '<table border="1">';
echo '<tr>';
foreach($query[0] as $key => $value) {
echo '<td>';
echo $key;
echo '</td>';
}
echo '</tr>';
foreach($query as $row) {
echo '<tr>';
foreach($row as $column) {
echo '<td>';
echo $column;
echo '</td>';
}
echo '</tr>';
}
echo '</table>';
Taken from here: https://www.antropy.co.uk/blog/handy-php-snippets/
mysql_connect("localhost","root","");
mysql_select_db("database");
$query=mysql_query("select * from studenti");
$x=#mysql_num_rows($query);
echo "<a href='file.html'>back</a>";
echo "<table>";
$y=mysql_num_fields($query);
echo "<tr>";
for($i=0 ,$i<$y,$i++)
{
$values=mysql_field_name($query,$i);
echo "<th>$values</th>";
}
echo "</tr>";
while(list($p ,$n $your_table_list)=mysql_fetch_row($query))
{
print("<tr>\n".
"<td>$p</td>".
"</tr>/n");
}
?>
<?php
$mysql_hostname = "localhost";
$mysql_user = "ram";
$mysql_password = "ram";
$mysql_database = "mydb";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Oops some thing went wrong");
mysql_select_db($mysql_database, $bd) or die("Oops some thing went wrong");// we are now connected to database
$result = mysql_query("SELECT * FROM users"); // selecting data through mysql_query()
echo '<table border=1px>'; // opening table tag
echo'<th>No</th><th>Username</th><th>Password</th><th>Email</th>'; //table headers
while($data = mysql_fetch_array($result))
{
// we are running a while loop to print all the rows in a table
echo'<tr>'; // printing table row
echo '<td>'.$data['id'].'</td><td>'.$data['username'].'</td><td>'.$data['password'].'</td><td>'.$data['email'].'</td>'; // we are looping all data to be printed till last row in the table
echo'</tr>'; // closing table row
}
echo '</table>'; //closing table tag
?>
it would print the table like this
just read line by line so that you can understand it easily..
OOP Style :
At first connection with database.
<?php
class database
{
public $host = "localhost";
public $user = "root";
public $pass = "";
public $db = "db";
public $link;
public function __construct()
{
$this->connect();
}
private function connect()
{
$this->link = new mysqli($this->host, $this->user, $this->pass, $this->db);
return $this->link;
}
public function select($query)
{
$result = $this->link->query($query) or die($this->link->error.__LINE__);
if($result->num_rows>0)
{
return $result;
}
else
{
return false;
}
}
?>
Then :
<?php
$db = new database();
$query = "select * from data";
$result = $db->select($query);
echo "<table>";
echo "<tr>";
echo "<th>Name </th>";
echo "<th>Roll </th>";
echo "</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td> $row[name]</td>";
echo "<td> $row[roll]</td>";
echo "</tr>";
}
echo "</table>";
?>
i want to query column names of a table, put in an array and then use that data in to a table for html,
well is like that
<?php
$ser='localhost';
$usr='root';
$pas='password';
$bsd='basedata';
$tab='contact';
try
{
$dbh = new PDO('mysql:host='.$ser.';dbname='.$bsd.'', $usr, $pas);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$query = $dbh->prepare("SHOW FIELDS FROM $tab ");
$query->execute();
echo "<tr>";
$i=0;
while ($dat = $query->fetch()) {
$nombre_columna[$i]=$dat[0];
echo "<th>".$nombre_columna[$i]."</th>";
$i++;
}
echo "</tr>\n";
$dbh = new PDO('mysql:host='.$ser.';dbname='.$bsd.'', $usr, $pas);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$query = $dbh->prepare("SELECT * FROM $tab");
$query->execute();
$j=$i;
$i=0;
while ($dat = $query->fetch()) {
echo "<tr>";
while ($i<$j) {
echo "<td>".$dat[$nombre_columna[$i]]."</td>";
$i++;
}
echo "</tr>\n";
}
$dbh=null;
?>
so when i run the code it shows onli the first row of the query but no more
I think you are misinterpreting the output. It is looping through every row in the table, but your problem is that the while ($i<$j) loop will only work the first time through because you keep incrementing the value of $i, so it will never be less than $j after the first iteration. You need to reset the value of $i on each iteration, not before the loop as you have it.
while ($dat = $query->fetch()) {
$i=0; // <-- This will fix it
echo "<tr>";
while ($i<$j) {
echo "<td>".$dat[$nombre_columna[$i]]."</td>";
$i++;
}
echo "</tr>\n";
}
If you looked at the source code, I would guess that you would see a bunch of these:
<tr></tr>
<tr></tr>
<tr></tr>
<tr></tr>