In this tutorial I will discuss how to remove special character from string in PHP. Sometimes we need to get result of an input string as a simple composition of alphabets and numbers and we want to remove all special characters by using preg_replace.

Here is the simple syntax:

$result = preg_replace($pattern, $replaceWith , $string);
$result = This is the output string without special characters.
$string = This is the string which you want filter special characters.

Code:

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function RemoveSpecialChar($value){
$result  = preg_replace('/[^a-zA-Z0-9_ -]/s','',$value);

return $result;
}

How to Call method:

echo $obj->RemoveSpecialChar(“does’t happened ‘ ‘ test”);
Result:
does t happened test

You can also use another PHP function str_replace() to get the same result as above script, if we know what all we have to remove special characters.

The syntax is:

$title = str_replace( array( ‘\”, ‘”‘, ‘,’ , ‘;’, ‘<', '>‘ ), ‘ ‘, $value);

Example:

Code
function RemoveSpecialChar($value){
$title = str_replace( array( ‘\”, ‘”‘, ‘,’ , ‘;’, ‘<', '>‘ ), ‘ ‘, $value);

return $title;
}

How to call Method
echo $obj->RemoveSpecialChar(“does’t happened ‘ ‘ test”);

Result:
does t happened test