<?php if ( !function_exists( 'mb_convert_encoding' ) ) { exit('[mbstring not loaded]'); } $oldSub = mb_substitute_character(); mb_substitute_character( 0xfffd ); $res = mb_convert_encoding( "\xf4\x90\x80\x80 \xc2", 'UTF-8', 'UTF-8' ); mb_substitute_character( $oldSub ); var_dump( bin2hex( $res ) );
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