[ Posted by Denis ] temp index for text

fiddle_094838.php

<?php
function textPrepare ($input)
{
    //clear tags, convert chars to html units,
    $input=strip_tags($input, '<br>'); //$input=strip_tags($input, '<br>');
    $input=strtolower($input);
    $input=htmlentities($input);
    return $input;
};
$text="This is the @ world we created! 1-2+3";


$text=textPrepare ($text);
$SpecialChars="@,.-+!?1234567890";
$SpecialCharsArray=str_split($SpecialChars);
for ($i=0;$i<count ($SpecialCharsArray);$i++)
{
    $SpecialCharsArrayWithFont[$i]='<span class="regularFont">'.$SpecialCharsArray[$i].'</span>';
};
$newphrase ='<span class="selectedFont">'. str_replace($SpecialCharsArray, $SpecialCharsArrayWithFont, $text).'</span>';
print_r ($newphrase);
?>