<?php function dostuff() { echo 'mb_check_encoding: '; if ( function_exists( 'mb_check_encoding' ) ) { var_dump( mb_check_encoding( "\xF4\x90\x80\x80", 'UTF-8' ) ); } else { echo "absent\n"; } echo 'preg_match: '; if ( function_exists( 'preg_match' ) ) { var_dump(preg_match( '//u', "\xF4\x90\x80\x80" )); } else { echo "absent\n"; } } dostuff();
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