I have a MySQL database table, where are configured all needed colors in hexadecimal, rgb decimal and cmyk color models. All I wanna do is storing all suitable results according to the query to variables. Please show newbie how can he do that right and effectively... Thanks in advance
DB
My disgrace
$result=$mysqli->query("SELECT * FROM config_colors WHERE `color_model_type`='hex' OR `color_model_type`='rgb'" );
while ($row=mysqli_fetch_array($result)) {
if (($row['color']==='white') || ($row['color']==='black')) {
if ($row['color_model_type']==='hex') {
print_r ('$c_h_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['color_model_type']==='rgb') {
print_r ('$c_r_'.$row['color'].' = '.$row['color_value']);
}
else {}
}
else {
if ($row['color_model_type']==='hex') {
if ($row['monochromatic_level']==='lightest') {
print_r ('$c_h_lt_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='lighter') {
print_r ('$c_h_lr_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='light') {
print_r ('$c_h_l_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='medium') {
print_r ('$c_h_m_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='dark') {
print_r ('$c_h_d_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='darker') {
print_r ('$c_h_dr_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='darkest') {
print_r ('$c_h_dt_'.$row['color'].' = '.$row['color_value']);
}
else {}
}
else if ($row['color_model_type']==='rgb') {
if ($row['monochromatic_level']==='lightest') {
print_r ('$c_r_lt_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='lighter') {
print_r ('$c_r_lr_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='light') {
print_r ('$c_r_l_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='medium') {
print_r ('$c_r_m_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='dark') {
print_r ('$c_r_d_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='darker') {
print_r ('$c_r_dr_'.$row['color'].' = '.$row['color_value']);
}
else if ($row['monochromatic_level']==='darkest') {
print_r ('$c_r_dt_'.$row['color'].' = '.$row['color_value']);
}
else {}
}
else {}
}
}
Additional questions about query: Is query written in terms of safety against SQL injection? What if my WHERE clause contains an integer?
You can use variable variables to dynamically assign values to new variables
instead of
print_r ('$c_h_'.$row['color'].' = '.$row['color_value']);
try
$var = 'c_h_'.$row['color'];
$$var = $row['color_value'];
Your query is safe on SQL injection as it does not receive any input data. There is no entry point for injection while you keep the query as it is.
About your problem and if I understood it, you're better going with an array per color type.
<?php
$rgb = array();
$hex = array();
$result = mysqli->query("
SELECT
*
FROM config_colors
WHERE
`color_model_type`='hex' OR
`color_model_type`='rgb'
");
while ($row = mysqli_fetch_array($result))
{
if ($row['color_model_type']==='hex')
$hex[ $row['color'] ] = $row;
elseif ($row['color_model_type']==='rgb')
$rgb[ $row['color'] ] = $row;
}
Later if you need information about white color in rgb format you just have to do var_dump($rgb['white']);
Related
My code in PHP is pretty long and I want to make it shorter with creating one function with different values and than I would just write one line with function name instead of many lines of code, but it doesn't seem to work.
This is that repeating code:
if (!isset($_POST['ID_user']) || empty($_POST['ID_user'])) {
$_SESSION['ID_user_missing'] = "error";
header("location: index.php");
} else {
$ID_user = $_POST['ID_user'];
}
if (!isset($_POST['meta_name']) || empty($_POST['meta_name'])) {
$_SESSION['meta_name_missing'] = "error";
header("location: index.php");
} else {
$meta_name = $_POST['ID_user'];
}
if (!isset($_POST['meta_value']) || empty($_POST['meta_value'])) {
$_SESSION['meta_value_missing'] = "error";
header("location: index.php");
} else {
$meta_value = $_POST['meta_value'];
}
And this was the plan, instead of that code up ther, I would just have this down below:
function ifIssetPost($value) {
if (!isset($_POST[$value]) || empty($_POST[$value])) {
$_SESSION[$value.'_chybi'] = "error";
header("location: index.php");
} else {
$$value = $_POST[$value];
}
}
ifIssetPost('ID_user');
ifIssetPost('meta_name');
ifIssetPost('meta_value');
But it just doesn't work, when you try to echo for example variable $meta_name it shows that it's empty. Can you help me ? Thank you very much.
NOTE: when I doesn't that function and do it the long way, everything works just fine, but the problem comes when I use that function.
The variable is in the scope of function. That's why you cannot access to it outside the function. You could return the value:
function ifIssetPost($value) {
if (empty($_POST[$value])) { // Only empty is needed (as pointed out by #AbraCadaver)
$_SESSION[$value.'_chybi'] = "error";
header("location: index.php");
exit; // add exit to stop the execution of the script.
}
return $_POST[$value]; // return value
}
$ID_user = ifIssetPost('ID_user');
$meta_name = ifIssetPost('meta_name');
$meta_value = ifIssetPost('meta_value');
You can also follow your specification, using $$value:
function ifIssetPost($value) {
if (!isset($_POST[$value]) || empty($_POST[$value])) {
$_SESSION[$value.'_chybi'] = "error";
header("location: index.php");
} else {
return $_POST[$value];
}
}
$value = 'ID_user';
$$value = ifIssetPost($value);
echo $ID_user;
$value = 'meta_name';
$$value = ifIssetPost($value);
echo $meta_name;
You can use an array to iterate over the $_POST vars. If you want to declare a variable using a string or another variable containing an string, you need to use {}. like ${$value}
$postValues = ["ID_user", "meta_name", "meta_value"];
foreach ($postValues as $value) {
if (!isset($_POST[$value]) || empty($_POST[$value])) {
$_SESSION[$value."_missing"] = "error";
header("location: index.php");
} else {
${$value} = $_POST[$value];
}
}
I am trying to GET different rows from different columns in php/mysql, and pack them into an array. I am able to successfully GET a jason encoded array back IF all values in the GET string match. However, if there is no match, the code echos 'no match', and without the array. I know this is because of the way my code is formatted. What I would like help figuring out, is how to format my code so that it just displays "null" in the array for the match it couldn't find.
Here is my code:
include '../db/dbcon.php';
$res = $mysqli->query($q1) or trigger_error($mysqli->error."[$q1]");
if ($res) {
if($res->num_rows === 0)
{
echo json_encode($fbaddra);
}
else
{
while($row = $res->fetch_array(MYSQLI_BOTH)) {
if($_GET['a'] == "fbaddra") {
if ($row['facebook'] === $_GET['facebook']) {
$fbaddr = $row['addr'];
} else {
$fbaddr = null;
}
if ($row['facebookp'] === $_GET['facebookp']) {
$fbpaddr = $row['addr'];
} else {
$fbpaddr = null;
}
$fbaddra = (array('facebook' => $fbaddr, 'facebookp' => $fbpaddr));
echo json_encode($fbaddra);
}
}
}
$mysqli->close();
UPDATE: The GET Request
I would like the GET request below to return the full array, with whatever value that didn't match as 'null' inside the array.
domain.com/api/core/engine.php?a=fbaddra&facebook=username&facebookp=pagename
The GET above currently returns null.
Requests that work:
domain.com/api/core/engine.php?a=fbaddra&facebook=username or domain.com/api/core/engine.php?a=fbaddra&facebookp=pagename
These requests return the full array with the values that match, or null for the values that don't.
TL;DR
I need assistance figuring out how to format code to give back the full array with a value of 'null' for no match found in a row.
rather than assigning as 'null' assign null. Your full code as follows :
include '../db/dbcon.php';
$res = $mysqli->query($q1) or trigger_error($mysqli->error."[$q1]");
if ($res) {
if($res->num_rows === 0)
{
echo json_encode('no match');
}
else
{
while($row = $res->fetch_array(MYSQLI_BOTH)) {
if($_GET['a'] == "fbaddra") {
if ($row['facebook'] === $_GET['facebook']) {
$fbaddr = $row['dogeaddr'];
//echo json_encode($row['dogeaddr']);
} else {
$fpaddr = null;
}
if ($row['facebookp'] === $_GET['facebookp']) {
$fbpaddr = $row['dogeaddr'];
//echo json_encode($row['dogeaddr']);
} else {
$fbpaddr = null;
}
$fbaddra = (array('facebook' => $fbaddr, 'facebookp' => $fbpaddr));
echo json_encode($fbaddra);
}
}
}
$mysqli->close();
You can even leave else part altogether.
Check your code in this fragment you not use same names for variables:
if ($row['facebook'] === $_GET['facebook']) {
$fbaddr = $row['dogeaddr'];
//echo json_encode($row['dogeaddr']);
} else {
$fpaddr = 'null';
}
$fbaddr not is same as $fpaddr, this assign wrong result to if statement.
It was the mysql query that was the problem.
For those who come across this, and need something similar, you'll need to format your query like this:
** MYSQL QUERY **
if ($_GET['PUTVALUEHERE']) {
$g = $_GET['PUTVALUEHERE'];
$gq = $mysqli->real_escape_string($g);
$q1 = "SELECT * FROM `addrbook` WHERE `facebookp` = '".$gq."' OR `facebook` = '".$gq."'";
}
** PHP CODE **
if($_GET['PUTVALUEHERE']{
echo json_encode($row['addr']);
}
I have a code like this
First looping count how many post the array:
for($i = 0; $i < $jumlah_qty ;$i++) {
if(!empty($qty[$i]) && !empty($id_cat[$i])) {
Insert booking:
$insert_booking_hd = $user_class->select($az);
$id_cates = $id_cat[$i];
for($b = 0;$b<$qty[$i];$b++) {
First validation if $_POST[$id_cates) is set run this code:
if(isset($_POST[$id_cates."".$b])){
$id_seat = $_POST[$id_cates."".$b];
Find the seat number in $select_seat and find if seat number is exist in $seat_number:
$select_seat = $user_class->select($query);
$seat_number = $user_class->select($querys);
$row_seat = $user_class->numrows($select_seat);
$row_seat2 = $user_class->numrows($seat_number);
if($row_seat>0) {
$update_seat = $user_class->update($update_false);
$bol[$b] = FALSE;
} else {
if( $row_seat2>0 ) {
$insert_booking_dt = $user_class->insert($insert);
$update_seat = $user_class->update($update_true);
$bol[$b] = TRUE;
} else {
$bol[$b] = FALSE;
}
}
} else {
$insert_booking_dt = $user_class->insert($insert_without_seat);
$bol[$b] = TRUE;
}
if($bol[$b]) {
echo "FALSE";
header("location:../../../print.php?id=$id_booking");
}
else {
echo "WRONG";
header("location:../../../event.php?msg=Same seat number");
}
}
}
}
Anything wrong with my php validation?
Because if I input array of $id_seat it will always redirect to print.php although validation is FALSE
for example if I input 3 array and then I echo FALSE WRONG FALSE FALSE
still redirect to print.php not to event.php
How can I read if one of array is get WRONG and then redirect to event.php?
How can I read if one of array is get WRONG and then redirect to event.php?
You may break out of for-loops.
Instead of:
else {
echo "WRONG";
header("location:../../../event.php?msg=Same seat number");
}
You could try:
else {
echo "WRONG";
header("location:../../../event.php?msg=Same seat number");
break 2;
}
my questions:
$state=array("你"=>1);
if(array_key_exists("你",$state))
{
$result = array_search("你",$state);echo $result;
}else
{
echo "No Exists";
}
i expect the result of "1", however the output is "No Exists", i don't know why the program can't get the value of the key "你".
array_search will search the given array by value. Try the following:
$state = array("你"=>1);
if(array_key_exists("你", $state)) {
echo $state["你"];
} else {
echo "No Exists";
}
// => 1
» demo
Hope below function will help.
<?php
$array = array('arr1'=>array('find_me'=>'yes you did.'));
function get_value_by_key($array,$key)
{
foreach($array as $k=>$each)
{
if($k==$key)
{
return $each;
}
if(is_array($each))
{
if($return = get_value_by_key($each,$key))
{
return $return;
}
}
}
}
echo get_value_by_key($array,'find_me');
?>
the encoding type of the show paper and the store paper is GB2312.
$state=array("你"=>1);
if(array_key_exists("你",$state))
{
$result1 = $state["你"];
echo $result1; // can get the value 111
}else
{
echo "No Exists";
}
the code above can be executed rightly. i can't show my problems accurately. Now i paste out my code , there is some questions.
<?php
$file = file("GB2312-HanZiBianMa.txt"); // file encoding type ANSI
foreach ($file as $line_num => $line)
{
list($no,$hex,$dec) = preg_split('[\t]',htmlspecialchars($line));;
$result[$hex] = $dec;
}
$result_2 = array_flip($result);
if(array_key_exists("你",$result_2)) // **can't find the value** 222
{
$state= $result_2["你"];
echo $state."<br/>";
}else
{
echo "No Exists<br/>";
}
foreach($result_2 as $k=>$each) //can get the value using the preg_match
{
if(preg_match('/你/', $k))
echo $k."\t".$each."<br/>";
}
?>
the format of GB2312-HanZiBianMa.txt is as follows:
1947 c4e3 你
1948 c4e4 匿
1949 c4e5 腻
1950 c4e6 逆
if your want to test the code , you can save the php code and save the GB2312.. file.
the question is:
why can't the following function get the right value ? the data comes from file and one stores together.
if(array_key_exists("你",$result_2)) // **can't find the value** 222
{
$state= $result_2["你"];
echo $state."<br/>";
}else
{
echo "No Exists<br/>";
}
The value is AbcDefg_123.
Here is the regex:
function checkAlphNum($alphanumeric) {
$return = false;
if((preg_match('/^[\w. \/:_-]+$/', $alphanumeric))) {
$return = true;
}
return $return;
}
Should allow a-zA-Z0-9.:_-/ and space in any order or format and does need all but at least one character.
EDIT: Sorry again, looks like var_dump() is my new best friend. I'm working with XML and it's passing the tag as well as the value.
#SilentGhost thnx for the tips.
It works for me too.
<?php
class RegexValidator
{
public function IsAlphaNumeric($alphanumeric)
{
return preg_match('/^[\w. \/:_-]+$/', $alphanumeric);
}
}
?>
and this is how I am testing it.
<?php
require_once('Classes/Utility.php');
$regexVal = new RegexValidator();
$list = array("abcd", "009aaa", "%%%%", "0000(", "aaaa7775aaa", "$$$$0099aaa", "kkdkdk", "aaaaa", "..0000", " ");
foreach($list as $value)
{
if($regexVal->IsAlphaNumeric($value))
{
echo $value . " ------>passed";
echo "<BR>";
}
else
{
echo $value . "------>failed";
echo "<br>";
}
}
?>
function checkAlphNum($alphanumeric) {
$return = false;
if((preg_match('/^[A-Za-z0-9\w. \/:_-]+$/', $alphanumeric))) {
$return = true;
}
return $return;
}
print checkAlphNum("AbcDefg_123");
Returns true.