Remove special characters from string in PHP
By Shristi RaniIn this tutorial, we will learn how to remove special characters from strings in PHP. We will see a built-in PHP function to remove the special characters and many more. Let’s get started.
Remove special characters from a string
Remove special characters such as |,@,! ,&,*,%,#,^etc. from a given string in PHP. While working on any project we all come across a situation where we want to either replace unwanted spaces with hyphens and also we want to clean strings that contain special characters.
Suppose we are given a string that not only contains alphanumeric characters but also special characters. To resolve such an issue in PHP we can make use of PHP built-in function preg_replace() method.
The preg_replace() method is used in such a way that it first searches for that regular expression and replaces it with the proper content which is provided by us.
Syntax:
preg_replace( pass pattern, replacement with, subject, limit, counts )
<!DOCTYPE html>
<html>
<body>
<?php
$str = "code@5 speedy!3*^&% tutorial#$";
$str = preg_replace('/[^A-Za-z\-]/', '', $str);
// Printing the result
echo $str;
?>
</body>
</html>OUTPUT: codespeedytutorial
Suppose sometimes we want to replace spaces in our string with hyphens. So we can make use of the str_replace() method in PHP.
<!DOCTYPE html>
<html>
<body>
<?php
$str = "code@5 speedy!3*^&% tutorial#$";
$str = str_replace(' ','-',$str);
$str = preg_replace('/[^A-Za-z\-]/', '', $str);
// Printing the result
echo $str;
?>
</body>
</html>OUTPUT: code-speedy-tutorial
Hope you liked this tutorial. Happy Learning !!!!!!!
Also Read: How to remove a specific value from an array in PHP
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