3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test{ const ABC♥ = "alphabet"; } $class = new ReflectionClass("Test"); $bad_char = "♥"; $constant = "ABC♥"; if ( $class->getConstant( $constant ) ) { if ( mb_strpos( $constant, $bad_char) !== false ) { trigger_error( "$bad_char in $constant" ); } }

preferences:
45.64 ms | 402 KiB | 5 Q