PHP Displaying data from MySQL database - php

Question

I wanted to display a page content with PHP and MySQL. But i don't know how to select and display data from PHP.
$name = $_GET['title'];
$query = "SELECT * FROM pages WHERE name = $name";
$result = mysql_query("$query");
But i don't know how to display data. I want to get the string value from content in sql table row where name = $name and display it.
If you can, please help me

Answer 1

You may try and include this in your code:
$name = mysqli_real_escape_string($_GET['title']);
$query = "SELECT * FROM pages WHERE name = $name";
$result = mysqli_query($link, $query);
while ($row = mysqli_fetch_array($result)){
echo $row['content'];
}
mysqli_free_result($result);
Here I have assumed $link as the handle to connect to the database.
N.B.: You may consider passing the $_GET values through mysqli_real_escape_string() to avoid sql injections which may prove fatal to the database and its tables. You also need to consider the usage of mysqli_* functions because mysql_* functions are deprecated and will be discontinued.

Answer 2

You have error in your sql, change
$query = "SELECT * FROM pages WHERE name = $name";
$result = mysql_query("$query");
to
$query = "SELECT * FROM pages WHERE name = '".$name."'"; // as name is char it should be enclosed in quotes
$result = mysql_query($query); // using quotes inside this will just display it without executing the query
You can fetch the results by this (if the result is only single record):
$row=mysql_fetch_array($result); // fetch the result as an array with subscript as the field name
echo $row['content']; // echo the value of the field content
If the query result contains multiple records then you have to do this inside a while loop like this:
while($row=mysql_fetch_array($result)) // fetch the result as an array with subscript as the field name
{
echo $row['content']; // echo the value of the field content
}

Answer 3

you have to do like this
$name = $_GET['title'];
$query = "SELECT * FROM pages WHERE name = '".$name."'";
$result = mysql_query($query);
//get values returned from query
$row=mysql_fetch_array($result);
//display required content
echo $row['content'];
Also mysql_* function are deprecated.You have to stop using this. Start using PDO or prepared statements or mysqli_* function

Answer 4

First of all the mysql_ is deprecated, use mysqli_
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, CountryCode FROM City ORDER by ID LIMIT 3";
$result = mysqli_query($link, $query);
/* numeric array */
$row = mysqli_fetch_array($result, MYSQLI_NUM);
printf ("%s (%s)\n", $row[0], $row[1]);
/* associative array */
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
printf ("%s (%s)\n", $row["Name"], $row["CountryCode"]);
/* associative and numeric array */
$row = mysqli_fetch_array($result, MYSQLI_BOTH);
printf ("%s (%s)\n", $row[0], $row["CountryCode"]);
/* free result set */
mysqli_free_result($result);
/* close connection */
mysqli_close($link);
?>
Source: http://www.php.net/manual/en/mysqli-result.fetch-array.php

Answer 5

$query = mysql_query("SELECT * FROM table WHERE name = $name");
$result = mysql_fetch_array($query);
//you'll get value in var
$var=$result['content'];

Answer 6

You can do this using Prepared Statements :
$query = "SELECT whatever1, whatever2 FROM pages WHERE name = ?";
$stmt = $connection->prepare($query);
$stmt->bind_param("s", $name);
$stmt->execute();
$stmt->bind_result($value_you_want, $value_you_want_as_well);
while($stmt->fetch()){
echo $value_you_want . $value_you_want_as_well;
}
$stmt->close();
Or you can do this using PDO :
$query = "SELECT whatever1, whatever2 FROM pages WHERE name = :name";
$stmt = $connection->prepare($query);
$stmt->bindParam(':name', $name, PDO::PARAM_STR, 20);
$stmt->execute();
$result = $stmt->fetchAll(PDO::FETCH_OBJ);
foreach ($result as $page) {
echo $page->whatever1 . $page->whatever2;
}
$stmt = null; // Set to null to destroy connection