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<?php $memory = memory_get_peak_usage(TRUE); $foo = str_repeat('AB', 200); $foo .= str_repeat('CD', 200); $foo .= str_repeat('EF', 200); echo memory_get_peak_usage(TRUE) - $memory, PHP_EOL; $memory = memory_get_peak_usage(TRUE); $foo = implode('', [str_repeat('AB', 200), str_repeat('CD', 200), str_repeat('EF', 200]); echo memory_get_peak_usage(TRUE) - $memory, PHP_EOL;
Output for 7.0.0
Parse error: syntax error, unexpected ']', expecting ',' or ')' in /in/tdvIX on line 10
Process exited with code 255.
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16
Parse error: syntax error, unexpected ']' in /in/tdvIX on line 10
Process exited with code 255.

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