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<?php $a = $r = $m = []; $a[1] = ['1','2','3']; $a[2] = ['4','5','6']; foreach ($a as $p) { $r = array_merge($r, $p); } var_dump($r); var_dump(array_map('array_merge', $a, &$r));
Output for 7.0.0 - 7.0.1
Parse error: syntax error, unexpected '&' in /in/ZjGdb on line 9
Process exited with code 255.
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16
Fatal error: Call-time pass-by-reference has been removed in /in/ZjGdb on line 9
Process exited with code 255.
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170.21 ms | 1395 KiB | 25 Q