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<?php function arr($array) { var_dump(key($array)); var_dump(current($array)); } $a = array('a' => 1, 'b' => 2, 'c' => 3); arr($a); next($a); arr($a); var_dump(key($array)); var_dump(current($array));
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "a" int(1) string(1) "b" int(2) Warning: Undefined variable $array in /in/U2mTH on line 14 Fatal error: Uncaught TypeError: key(): Argument #1 ($array) must be of type array, null given in /in/U2mTH:14 Stack trace: #0 /in/U2mTH(14): key(NULL) #1 {main} thrown in /in/U2mTH on line 14
Process exited with code 255.

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