Why is it recommended to use preg_ functions instead of eregi_replace in PHP?

The eregi_replace function in PHP is deprecated as of PHP 5.3.0 and removed as of PHP 7.0.0. It is recommended to use preg_replace with the 'i' modifier instead, as it provides case-insensitive matching functionality similar to eregi_replace. This ensures that your code remains compatible with newer versions of PHP. 

// Using preg_replace with 'i' modifier to perform case-insensitive matching
$string = "Hello World";
$pattern = "/hello/i";
$replacement = "Hi";
$result = preg_replace($pattern, $replacement, $string);
echo $result; // Output: Hi World

Keywords

preg_replace eregi_replace PHP regular expressions deprecated

Related Questions