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<?php class Test{ const AB♥ = "alphabet"; } $rc = new ReflectionClass("Test"); $const = array_keys( $rc->getConstants())[0]; // $substr = substr( $const, -1,1 ); $substr = mb_substr( $const, -1,1 ); // PHP 5.6 if ( $substr === "♥" ) { trigger_error("\"♥\" in \"$const\"", E_USER_ERROR ); } // Notice: "♥" in "AB ♥" …
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: "♥" in "AB♥" in /in/qPuDf on line 8
Process exited with code 255.

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