- htmlentities: documentation ( source)
<?php
print "-->".htmlentities("test ì")."<--\n";
print "-->".htmlentities("test à")."<--\n";
print "-->".htmlentities("test ò")."<--\n";
print "-->".htmlentities("test ù")."<--\n";
print "-->".htmlentities("test è")."<--\n";
print "-->".htmlentities("test é")."<--\n";
?>