(PHP 5 >= 5.2.0, PHP 7, PHP 8)
preg_last_error — Returns the error code of the last PCRE regex execution
Returns the error code of the last PCRE regex execution.
Example #1 preg_last_error() example
<?php
preg_match('/(?:\D+|<\d+>)*[!?]/', 'foobar foobar foobar');
if (preg_last_error() == PREG_BACKTRACK_LIMIT_ERROR) {
echo 'Backtrack limit was exhausted!';
}
?>The above example will output:
Backtrack limit was exhausted!
This function has no parameters.
Returns one of the following constants (explained on their own page):