3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** * Check if variable is a numeric array. * * @param array|mixed $var * @return bool */ $b=array(1,2); function is_numeric_array($var): bool { if (!is_array($var)) { return false; } $keys = array_keys($var); return ($keys === array_keys($keys)); } var_dump(is_numeric_array($b));
Output for 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
bool(true)
preferences:
150.59 ms | 407 KiB | 5 Q