How to Remove Special Character from String in PHP

June 2, 2018 XpertPhp Comments 1 comment

In this tutorial, We will inform you how to remove special character from string in PHP. we want to remove all special characters from the string by using preg_replace. So, its function will remove any special character except letter and numbers.

Using preg_replace PHP Function

some data that contains special characters (e.g. single quote, double quote. special characters removed from a string using the preg_replace function.

<?php 
$string="example?";
$data = preg_replace('/[^a-zA-Z0-9_ -]/s','',$string);

echo $data;

//output example
?>

<?php

$string="example?";

$data = preg_replace('/[^a-zA-Z0-9_ -]/s','',$string);

echo $data;

//output example

Using str_replace PHP Function

some data that contains special characters (e.g. single quote, double quote. special characters removed from a string using the str_replace function.

<?php 
function deleteSpecialChar($str) {
      
    // replace all special characters by empty string 
    $res = str_replace( array( '%', '@', '\'', ';', '<', '>' ), ' ', $str);
      
    return $res;
}
  
// string example
$str = "A % B @ C <D>'E;"; 
  
// Call the function
$res = deleteSpecialChar($str); 
  
// Display the result
echo $res; 

//output A B C D E
?>

<?php

function deleteSpecialChar($str) {

// replace all special characters by empty string

$res = str_replace( array( '%', '@', '\'', ';', '<', '>' ), ' ', $str);

return $res;

}

// string example

$str = "A % B @ C <D>'E;";

// Call the function

$res = deleteSpecialChar($str);

// Display the result

echo $res;

//output A B C D E

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