<?php class Test{ const AB♥ = "alphabet"; } $rc = new ReflectionClass("Test"); $t = array_keys( $rc->getConstants())[0]; $substr = substr( $t, -1,1 ); $substr = mb_substr( $t, -1,1 ); // PHP 5.6 if ( $substr === "♥" ) { trigger_error("\"♥\" in \"$t\"",E_USER_ERROR ); } // [ PHP5.4 - 5.6 ] // Fatal error: "♥" in "AB ♥" …
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