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@ 2014-08-28T10:20:06Z

<?php
class Test{ const ♥ = "love"; }
$class = new ReflectionClass("Test");
$constant = "♥";
if ( $class->hasConstant( $constant ) ) {
	if ( mb_strpos( $constant,  "♥") !== false  )	{
 		trigger_error( "Bad Usage: $bad_char" ); 
	}   
}

Output
Performance
VLD
References
Branches

mb_strpos: documentation ( source)
trigger_error: documentation ( source)

preferences:dark modelive preview

49.3 ms | 402 KiB | 5 Q