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<?php $o = new stdClass; $o->name = "John"; $o->age = 30; $o->car =null; $o2 = new stdClass; $o2->name = "Mike"; $o2->age = 32; $o2->car =null; $myarray = [$o, $o2]; var_dump(json_encode($myarray));
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 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 - 7.4.27, 8.0.0 - 8.0.15, 8.1.0 - 8.1.2
string(73) "[{"name":"John","age":30,"car":null},{"name":"Mike","age":32,"car":null}]"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/8Fcn5 on line 14
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/8Fcn5 on line 14
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/8Fcn5 on line 14
Process exited with code 255.

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