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<?php $arr = [1,2,3]; var_dump(memory_get_usage()); foreach ($arr as $k => $v) { $arr[0] = 2; } var_dump(key($arr));
Output for 7.4.0
int(387752) int(0)
Output for 7.3.0 - 7.3.12
int(387672) int(0)
Output for 7.2.17 - 7.2.25
int(383792) int(0)
Output for 7.2.0
int(383832) int(0)
Output for 7.1.26 - 7.1.33
int(347120) int(0)
Output for 7.1.0, 7.1.7
int(347192) int(0)
Output for 7.1.5 - 7.1.6
int(347352) int(0)
Output for 7.0.0 - 7.0.20
int(347568) int(0)
Output for 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
int(218592) int(1)
Output for 5.4.10 - 5.4.45
int(219112) int(1)
Output for 5.4.0 - 5.4.9
int(218584) int(1)
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/FsRPg on line 3
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/FsRPg on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/FsRPg on line 3
Process exited with code 255.

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