3v4l.org

run code in 300+ PHP versions simultaneously
<?php function bit2chr_mask(string $flags, int $bitmask): string { $chrmask = ''; for($bit = 1, $i = 0; $bit < $bitmask; $bit <<= 1, $i++) { if($bitmask & $bit){ $chrmask .= $flags[$i]; } } return $chrmask; } var_dump(bit2chr_mask('abcdefghijklmnopqrstuvwxyz1234567890', 2147483648));
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.16, 8.4.1 - 8.4.3
string(0) ""
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/9ikdh on line 3
Process exited with code 255.
preferences:
127.98 ms | 407 KiB | 5 Q