3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=array('uno'=>13); echo isset('uno');
Output for 5.4.0 - 5.4.12, 5.4.14
Parse error: syntax error, unexpected ''uno'' (T_CONSTANT_ENCAPSED_STRING) in uOXS1 on line 3
Process exited with code 255.
Output for 5.4.13
Parse error: syntax error, unexpected ''uno'' (T_CONSTANT_ENCAPSED_STRING) in /in/IiW4O on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.22, 5.3.24
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in uOXS1 on line 3
Process exited with code 255.
Output for 5.3.23
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/IiW4O on line 3
Process exited with code 255.
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