3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "// blah blah blah\n\nconst filename = \"\";\n\n// blah blah blah"; echo preg_replace('~^(\h*const\s+filename\s*=\s*).+~mi', '$1"NEW VALUE";', $string);

This is an error 500

Value for `_results` contains invalid data `array`


preferences:
165.77 ms | 1872 KiB | 9 Q