3v4l.org

run code in 300+ PHP versions simultaneously
<?php php -n -r 'echo var_dump(preg_replace("/(<!)(?!\\s*(?:\\[if [^\\]]+]|<!|>))((?:(?!>).)*[^\\]])(-->)/is", "", "<!" . str_repeat("x", 99999) . "-->"));'
Output for 5.4.0 - 5.4.15
Parse error: syntax error, unexpected ''echo var_dump(preg_replace("/' (T_CONSTANT_ENCAPSED_STRING) in /in/a4Weu on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.25
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/a4Weu on line 3
Process exited with code 255.
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174.83 ms | 1399 KiB | 49 Q