preg_quote

  • When we use a string as a regular expression, we want to escape the characters that could be interpreted as regexp special characters. PHP does this using preg_quote, and Ruby has an equivalent Regexp.escape method.

    In this example, we’ll escape any regular expression special character in the given string.

    PHP

    $string = '[my_file.gif]';
$result = preg_quote($string);
 
var_export($result);
// => '\\[my_file\\.gif\\]'

    Ruby

    string = '[my_file.gif]'
result = Regexp.escape(string)
 
p result
# => "\\[my_file\\.gif\\]"

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