How can regular expressions syntax differ when switching from the posix-methods in ereg to Perl regular expressions in preg_replace()?

When switching from the POSIX-methods in ereg to Perl regular expressions in preg_replace(), the main difference lies in the syntax used for regular expressions. Perl regular expressions offer more powerful features and a different syntax compared to POSIX regular expressions. To solve this issue, you need to update your regular expressions to adhere to the Perl syntax when using preg_replace(). 

// Using POSIX-methods in ereg
$string = "Hello, World!";
$pattern = "/[aeiou]/";
$replacement = "-";
$new_string = ereg_replace($pattern, $replacement, $string);

// Switching to Perl regular expressions in preg_replace()
$string = "Hello, World!";
$pattern = "/[aeiou]/";
$replacement = "-";
$new_string = preg_replace($pattern, $replacement, $string);

Keywords

regular expressions syntax posix-methods ereg preg_replace

Related Questions