php-regexHow to remove non-printable characters using PHP regex?

Using PHP regex, non-printable characters can be removed from a string. The following example code block uses the preg_replace function to remove all non-printable characters from a string:

$string = preg_replace('/[\x00-\x1F\x7F]/u', '', $string);

This code will output a string with all non-printable characters removed:

This is a string with non-printable characters removed.

The code consists of the following parts:

• preg_replace: This is a PHP function used to perform a regular expression search and replace.
• /[\x00-\x1F\x7F]/u: This is the regular expression used to match all non-printable characters.
• $string: This is the string to be searched and replaced.

Helpful links

• PHP preg_replace
• Regular Expressions

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