3v4l.org

run code in 300+ PHP versions simultaneously
<?php function cn_substr_utf8($str, $length, $start=0) { if(strlen($str) < $start+1) { return ''; } preg_match_all("/./su", $str, $ar); var_dump($ar); $str = ''; $tstr = ''; //为了兼容mysql教程4.1以下版本,与数据库教程varchar一致,这里使用按字节截取 for($i=0; isset($ar[0][$i]); $i++) { if(strlen($tstr) < $start) { $tstr .= $ar[0][$i]; } else { if(strlen($str) < $length + strlen($ar[0][$i]) ) { $str .= $ar[0][$i]; } else { break; } } } var_dump($tstr); return $str; } var_dump(); // $a = '测试这是一个测试'; $a = 'xxxxbbbbbnnn'; $b = cn_substr_utf8($a,5,0); var_dump($b); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: var_dump() expects at least 1 argument, 0 given in /in/s0R5W:35 Stack trace: #0 /in/s0R5W(35): var_dump() #1 {main} thrown in /in/s0R5W on line 35
Process exited with code 255.

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
35.16 ms | 401 KiB | 8 Q