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run code in 300+ PHP versions simultaneously
<?php echo(echo('hello'));;
Output for 5.6.38, 7.1.0 - 7.1.23, 7.2.0 - 7.2.11
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/1CUEs on line 1
Process exited with code 255.
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150.69 ms | 1238 KiB | 6 Q