Regex usage for remove special characters in PHP

Pushing data into MySQL using PHP regex ✏️

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1. preg_replace()

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🔔  Searches subject for matches to pattern and replaces them with replacement.  

preg_replace() is a implemented function in PHP. Syntax is the following:

<?php
$string = 'April 15, 2003';
$pattern = '/(\w+) (\d+), (\d+)/i';
$replacement = '${1}1,$3';
echo preg_replace($pattern, $replacement, $string);
?>

2. Syntax

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🔔  Various types can be made by using Regex

Remove all special characters

$string = preg_replace(" /[#&+%@=/;.'"^`|!$<>())[]{}]/i", "", $string);  
$string = addslashes($string);

References
PHP Official Document
Penggu's blog
Celestia's blog

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