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<?php class Test{ const ABC♥ = "alphabet"; } $class = new ReflectionClass("Test"); $bad_char = "♥"; $constants = $class->getConstants(); $keys = array_keys($constants); for ( $i=0, $ct=count($keys); $i < $ct; $i++) { $target = $keys[ $i ]; if ( strpos( $target, $bad_char) !== false ) { var_dump(substr($bad_char,0,1)); var_dump(mb_substr($bad_char,0,1)); // PHP5.6 var_dump(strlen($bad_char), mb_strlen( $bad_char, '8bit' )); trigger_error( "'$bad_char' in '$target'" ); }}
Output for git.master, git.master_jit, rfc.property-hooks
string(1) "�" string(3) "♥" int(3) int(3) Notice: '♥' in 'ABC♥' in /in/rji8h on line 13

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