3v4l.org

run code in 300+ PHP versions simultaneously
<?php @echo (int) isset( $a ); // false and w/o error msg @echo (int) empty( $a ); // true (false and 0 empty, too @echo (int) is_null( $a ); // true and error msg @echo (int) null === $a; // true and error msg
Output for 5.4.0 - 5.4.30
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/R5We1 on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_ECHO in /in/R5We1 on line 2
Process exited with code 255.
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