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run code in 150+ php & hhvm versions
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<?php $a = [['id' => 1, 'foo' => 'bar']]; $b = [['id' => 3, 'foo' => 'nevim'], ['id' => 1, 'foo' => 'bar'], ['id' => 2, 'foo' => 'baz']]; var_dump(array_merge($a, $b));
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(4) { [0]=> array(2) { ["id"]=> int(1) ["foo"]=> string(3) "bar" } [1]=> array(2) { ["id"]=> int(3) ["foo"]=> string(5) "nevim" } [2]=> array(2) { ["id"]=> int(1) ["foo"]=> string(3) "bar" } [3]=> array(2) { ["id"]=> int(2) ["foo"]=> string(3) "baz" } }
Output for 5.2.3 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/4uFRa on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected '[' in <b>/in/4uFRa</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
<br /> <b>Parse error</b>: parse error, unexpected '[' in <b>/in/4uFRa</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error in <b>/in/4uFRa</b> on line <b>3</b><br />
Process exited with code 255.