3v4l.org

run code in 300+ PHP versions simultaneously
<?php $heading = 'h2'; echo ++$heading\n; echo ++$heading\n; echo ++$heading\n;echo ++$heading\n;
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '\' (T_NS_SEPARATOR), expecting ',' or ';' in /in/FObfu on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_NS_SEPARATOR, expecting ',' or ';' in /in/FObfu on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/FObfu on line 4 Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /in/FObfu on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/FObfu on line 4 Parse error: parse error, unexpected T_STRING, expecting ',' or ';' in /in/FObfu on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/FObfu on line 4 Parse error: parse error, expecting `','' or `';'' in /in/FObfu on line 4
Process exited with code 255.
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