3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo 0b01 + 1;
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
2
Output for 5.3.28 - 5.3.29
Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /in/ahSS8 on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /in/oaqWC on line 2
Process exited with code 255.

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203.31 ms | 401 KiB | 252 Q