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run code in 300+ PHP versions simultaneously
<?php $var_name = 'Any string..☺..ж..╚ can be a variable name'; $$var_name = 'test -- by variable variable'; $[' '] = 'test -- by quoted string as variable name'; var_dump($GLOBALS);
Output for 5.4.0 - 5.4.26
Parse error: syntax error, unexpected '[', expecting variable (T_VARIABLE) or '$' in /in/P60X0 on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[', expecting T_VARIABLE or '$' in /in/P60X0 on line 8
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 '[', expecting T_VARIABLE or '$' in /in/P60X0 on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/P60X0 on line 8
Process exited with code 255.

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