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<?php class Foo { public static function bar() {} } $objects = array_map(function () { return new Foo; }, range(0, 10000)); var_dump(memory_get_usage());
Output for 7.2.0
int(1435088)
Output for 7.0.0 - 7.0.20, 7.1.0, 7.1.7
int(1398384)
Output for 7.1.5 - 7.1.6
int(1398552)
Output for 5.6.8 - 5.6.28
int(3174144)
Output for 5.5.24 - 5.5.35
int(3174136)
Output for 5.4.0 - 5.4.45
int(3174648)
Output for 5.3.11 - 5.3.29
int(5177192)
Output for 5.3.0 - 5.3.10
int(5176904)
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/g8lX7 on line 8
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/g8lX7 on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/g8lX7 on line 5
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/g8lX7 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/g8lX7 on line 5
Process exited with code 255.

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