Showing posts with label PHP $_POST. Show all posts
Showing posts with label PHP $_POST. Show all posts

Friday, 2 August 2019

How to convert all $_POST or $_GET values to Integers

By using the built-in PHP functions  array_map and intval.
  • array_map = Applies the callback to the elements of the given arrays, this applies the function for each value of an array (PHP 4 >= 4.0.6, PHP 5)
  • intval = Get the integer value of a variable (PHP 4, PHP 5)
Examples:
{codecitation style=”brush: PHP;”}
$post_int = array_map(‘intval’, $_POST); //Converting every post value to integer
$get_int = array_map(‘intval’, $_GET); //Converting every get value to integer
{/codecitation}

Monday, 20 July 2015

PHP: Store value from Dropdown in SESSION Using Ajax with Lightbox

Storing the value from dropdown box in session using ajax programming with lightbox means user will have only focus to dropdown box. Lightbox will be overlayed on website, so the dropdown box can easily get selected by user. Here is the tutorial, source code and demo link

index.php
<?php
session_start();
?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var height=$(window).height();
var width=$(window).width();
$(".black-overlay").css("display","block");
$(".form-area").css("display","block");
$(".black-overlay").css("height",height);
$(".form-area").css("margin-top",height/2);
$(".form-area").css("margin-left",width/2.6);

$('#city').change(function(){
$(".black-overlay").css("display","none");
$(".form-area").css("display","none");
var area=$('#city option:selected').val();
$.ajax({
type: "POST",
url: "ajax.php",
data: "area="+area ,
success: function(html){
$('#area').val(html);
}
});
});
});
</script>
<style type="text/css">
.black-overlay
{
background:#000;
opacity: 0.6;
position:fixed;
top: 0;
left: 0;
width: 100%;
z-index: 110000;
display:none;
}
.form-area
{
width: 300px;
margin:0 auto;
position: fixed;
z-index: 10000000;
display:none;
}
#city
{
padding: 7px 13px;
width: 226px;
height: 43px;
border: 1px solid #fff;
line-height: 50px;
font-size: 21px;
color: #000;
}
.select-city-text
{
color: #fff;
text-transform: uppercase;
font-family: verdana;
font-size: 20px;
margin: 0 0 8px 0;
letter-spacing: 9px;
}
</style>

</head>

<body>
<div class="black-overlay">
</div>

<form method="post" action="" class="form-area">
<div class="select-city-text">Select City</div>
<select id="city">
<option>Bangalore</option><option>Mysore</option><option>Bagalkot</option><option>Bangalore</option><option>Basavakalyan</option><option>Belgaum</option><option>Bellary</option><option>Bhadravati</option><option>Bidar</option><option>Bijapur</option><option>Bommanahalli</option>
</select>
</form>
<input type="text" id="area" />
</body>
</html>
ajax.php
Data passed to ajax.php will be stored in a SESSION
<?php
session_start();
if(!empty($_POST['area']))
{
$_SESSION['area']=$_POST['area'];
echo $_SESSION['area'];
}

?>

Monday, 13 July 2015

PHP: HOW TO SAVE MULTIPLE INPUT ENTRIES IN ONE COLUMN IN MYSQL USING PHP?

Introduction:
Serialization method – serialize() is to store multiple fields in single column. PHP is able to automatically serialize most of its variables to strings – letting you save them into storage like $_SESSION. However, there are some tweaks you have to know to avoid exploding .php scripts and performance problems.

serialize() converts an array, given as its only parameter, into a normal string that you can save in a file, pass in a URL, etc. Unserialize() is the opposite of serialize() – it takes a serialized string and converts it back to an array.


Example:
On Post request you have received $_POST data for name, mobile, address, email.
<?php 
$data = $_POST; 
$data_serialize = serialize($data); 
?>

Output:
resulting array will bea:4:{s:4:"name";s:3:"abc";s:6:"mobile";s:13:"9874325972398";s:7:"address";s:4:"test";
s:5:"email";s:13:"test@test.com";} use this serialized string to insert into database.

Unserialize value from DB:
$data_unserialize = unserialize($records_serialize);

Monday, 23 February 2015

PHP: Capture the requested URI and Clean up global variables

<?php
$requestURI = 'http://'.$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']';
echo $requestURI;
?>

This snippet is more of an example of how to convert strings to lowercase characters, and then clean them up for use in scripts, etc
<?php
$_POST["name"] = strtolower(stripslashes(trim(htmlspecialchars($_POST["name"])))); $_POST["message"] = strtolower(stripslashes(trim(htmlspecialchars($_POST["message"]))));
?>

Thursday, 19 February 2015

PHP select box multiple selections

<form action="<?=$_SERVER['PHP_SELF']?>" method="post">
<select name="test[]" multiple="multiple">
 <option value="one">one</option> 
<option value="two">two</option>
 <option value="three">three</option>
 <option value="four">four</option>
 <option value="five">five</option> 
</select> 
<input type="submit" value="Send" /> 
</form>


<?php
 $test=$_POST['test'];
 if ($test){
       foreach ($test as $t){
           echo 'You selected ',$t,'<br />';
        }
 } ?>

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