PREG_LAST_ERROR(3) 1 PREG_LAST_ERROR(3)
preg_last_error - Returns the error code of the last PCRE regex execution
SYNOPSIS
int preg_last_error (void )
DESCRIPTION
Returns the error code of the last PCRE regex execution.
Example #1
preg_last_error(3) example
<?php
preg_match('/(?:D+|<d+>)*[!?]/', 'foobar foobar foobar');
if (preg_last_error() == PREG_BACKTRACK_LIMIT_ERROR) {
print 'Backtrack limit was exhausted!';
}
?>
The above example will output:
Backtrack limit was exhausted!
RETURN VALUES
Returns one of the following constants (explained on their own page):
o PREG_NO_ERROR
o PREG_INTERNAL_ERROR
o PREG_BACKTRACK_LIMIT_ERROR (see also pcre.backtrack_limit)
o PREG_RECURSION_LIMIT_ERROR (see also pcre.recursion_limit)
o PREG_BAD_UTF8_ERROR
o PREG_BAD_UTF8_OFFSET_ERROR (since PHP 5.3.0)
PHP Documentation Group PREG_LAST_ERROR(3)
