Ask a question about regular expressions
<?php $a=12; $reg='/1*/'; preg_match_all( $reg, $a, $match); var_dump($match); exit;
//Output result
array(1) {
[0]=>
array(3) {
[0]=>
string(1) "1"
[1]=>
string(0) ""
[2]=>
string(0) ""
}
}
Why is it output 3 subscripts? Where did the third subscript come from?
