preg_last_error
preg_last_error
(PHP 5 >= 5.2.0, PHP 7)
preg_last_error — Returns the error code of the last PCRE regex execution
Description
int preg_last_error ( void )
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) { print 'Backtrack limit was exhausted!'; } ?>