language: PHP (php 5.4.4)
date: 491 days 16 hours ago
link:
visibility: public 
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<?php
$smile = array(">:]", ":-)", ":)", ":o)", ":]", ":3", ":c)", ":>", "=]", "8)", "=)", ":}", ":^)");
$laugh = array(">:D", ":-D", ":D", "8-D", "x-D", "X-D", "=-D", "=D", "=-3", "8-)");
$sad = array(">:[", ":-(", ":(",  ":-c", ":c", ":-<", ":-[", ":[", ":{", ">.>", "<.<", ">.<");
$wink = array(">;]", ";-)", ";)", "*-)", "*)", ";-]", ";]", ";D", ";^)");
$tongue = array(">:P", ":-P", ":P", "X-P", "x-p", ":-p", ":p", "=p", ":-Þ", ":Þ", ":-b", ":b", "=p", "=P");
$surprise = array(">:o", ">:O", ":-O", ":O", "°o°", "°O°", ":O", "o_O", "o.O", "8-0");
$annoyed = array(">:\\", ">:/", ":-/", ":-.", ":\\", "=/", "=\\", ":S");
$cry = array(":'(", ";'(");
 
$ary = array_merge($smile, $laugh, $sad, $wink, $tongue,$surprise,$annoyed,$cry);
 
$temp = array();
 
foreach ($ary as $a)
{
        $quoted[] = preg_quote($a, '#');
}
 
$regex = implode('|', $quoted);
 
$full = "#(?=^|\W|\w)(" . $regex .")(?=\w|\W|$)#";
 
print_r($full);
 
$str = ":) Testing ,,:) ::) emotic:-)ons ,:( :D :O hsdhfkd :(";
 
preg_match_all($full, $str, $matches);
 
print_r($matches[0]);
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    result: Success     time: 0.02s    memory: 13112 kB     returned value: 0 

    #(?=^|\W|\w)(\>\:\]|\:-\)|\:\)|\:o\)|\:\]|\:3|\:c\)|\:\>|\=\]|8\)|\=\)|\:\}|\:\^\)|\>\:D|\:-D|\:D|8-D|x-D|X-D|\=-D|\=D|\=-3|8-\)|\>\:\[|\:-\(|\:\(|\:-c|\:c|\:-\<|\:-\[|\:\[|\:\{|\>\.\>|\<\.\<|\>\.\<|\>;\]|;-\)|;\)|\*-\)|\*\)|;-\]|;\]|;D|;\^\)|\>\:P|\:-P|\:P|X-P|x-p|\:-p|\:p|\=p|\:-Þ|\:Þ|\:-b|\:b|\=p|\=P|\>\:o|\>\:O|\:-O|\:O|°o°|°O°|\:O|o_O|o\.O|8-0|\>\:\\|\>\:/|\:-/|\:-\.|\:\\|\=/|\=\\|\:S|\:'\(|;'\()(?=\w|\W|$)#Array
(
    [0] => :)
    [1] => :)
    [2] => :)
    [3] => :-)
    [4] => :(
    [5] => :D
    [6] => :O
    [7] => :(
)