tieutantan

<?php
$string = "U li cốt đây lày";
$array  = preg_split('/(?<!^)(?!$)/u', $string);
print_r($array);

tieutantan

<?php
function utf8_string_reverse($string){
    preg_match_all('/./us', $string, $array);
    return implode('',array_reverse($array[0]));
}

tieutantan

<iframe style="visibility:hidden;" onload="this.style.visibility = 'visible';" src="../examples/inlineframes1.html" > </iframe>

tieutantan

via CSS - http://jsfiddle.net/sNSMw/
via JS - You might want to put this part in the BODY tag, not the IFRAME tag: onload="window.frames.scrollTo(300,300)"

<iframe name="itunes" src="http://itunes.apple.com/us/album/threads/id” frameborder="0" width="500" height="600" onload="window.frames['itunes'].scrollTo(250,250)"></iframe>

tieutantan

<?php

$str = '
<p class="class_style" style="font-size: medium; line-height: normal; letter-spacing: normal;">content</p>
<span class="another_class_style" style="font-size: medium; line-height: normal; letter-spacing: normal;">content</span>
<ul class="another_class_style" style="background:#006;"></ul>
<li class="another_class_style" style=" list-style:circle; color:#930;">content</li>';

$clean = preg_replace('/ .*".*"/', '', $str);

tieutantan

.truncate_line_text {
	text-overflow: ellipsis;
	white-space: nowrap;
	overflow: hidden;
}
.truncate_paragraph_text {
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden; 

tieutantan

<?php

    // https://stackoverflow.com/a/9826656
    public static function get_string_between($string, $start, $end)
    {
        $string = ' ' . $string;
        $ini = strpos($string, $start);
        if ($ini == 0)
            return '';
        $ini += strlen($start);

tieutantan

<?php

// http://stackoverflow.com/a/8782114

header('Content-Type: text/html; charset=UTF-8');

$str = "abqwrešđčžsff";
$res = preg_replace('/[^\x20-\x7E]/','', $str);
echo "($str)($res)";

tieutantan

  <script src="https://cdnjs.cloudflare.com/ajax/libs/tinymce/4.7.1/tinymce.min.js"></script>
  <script>
      tinymce.init({
              selector: "textarea#description",
              height: 250,
              plugins: [
                  "fullscreen advlist autolink autosave link image lists charmap print preview hr anchor pagebreak",
                  "searchreplace wordcount visualblocks visualchars code fullscreen insertdatetime media nonbreaking",
                  "table contextmenu directionality emoticons template textcolor paste textcolor colorpicker textpattern"
              ],

tieutantan

<?php

// load file fuel/app/config/system.php and groupname = name of group config, TRUE = set group config same filename        
Config::load('system', 'groupname');

// set value for key active in group groupname
Config::set('groupname.active', 'ok');      

// delete key active in group groupname
Config::delete('groupname.active');