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run code in 300+ PHP versions simultaneously
<?php $a = (1<<0); $b = (1<<0); echo $b|$a
Output for 5.4.13 - 5.4.14
Parse error: syntax error, unexpected end of file, expecting ',' or ';' in /in/ElmHZ on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.12
Parse error: syntax error, unexpected end of file, expecting ',' or ';' in beh8J on line 4
Process exited with code 255.
Output for 5.3.23 - 5.3.24
Parse error: syntax error, unexpected $end, expecting ',' or ';' in /in/ElmHZ on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.22
Parse error: syntax error, unexpected $end, expecting ',' or ';' in beh8J on line 4
Process exited with code 255.

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