arrays - Split a string - PHP -

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i have mutltistrings : 

string '10<sup>ème</sup><span class="tlost">(-2)</span>' (length=48)   string '7<sup>ème</sup><span class="tlost">(-2)</span>' (length=47)  string '5<sup>ème</sup><span class="tlost">(-2)</span>' (length=47)  string '2<sup>ème</sup><span class="tlost">(-2)</span>' (length=47)  string '4<sup>ème</sup><span class="twin">(+1)</span>' (length=46)

and wonder can explode them in 2 parts :

array(   [0]=>'10<sup>ème</sup>',    [1]=>'<span class="tlost">(-2)</span>'   )

i tried didn't work : 

$position[] = explode("</sup>",$value);

is there other way ??
here's apart of array want transform :

  array (size=21)  0 =>    array (size=4)   'mot clé' => string 'test1' (length=5)   'bing' => string '0<sup>ème</sup><span class="tlost">(-1)</span>' (length=47)   'google' => string '10<sup>ème</sup><span class="tlost">(-2)</span>' (length=48)   'yahoo' => string '=' (length=1)  1 =>  array (size=4)   'mot clé' => string 'test2' (length=5)   'bing' => string '0<sup>ème</sup><span class="tlost">(-1)</span>' (length=47)   'google.fr france' => string '7<sup>ème</sup><span class="tlost">(-2)</span>'      (length=47)     'yahoo' => string '=' (length=1)   2 =>    array (size=4)   'mot clé' => string 'test3' (length=5)   'bing' => string '0<sup>ème</sup><span class="tlost">(-1)</span>' (length=47)   'google' => string '5<sup>ème</sup><span class="tlost">(-2)</span>' (length=47)   'yahoo' => string '=' (length=1)

try regex... tags , put in array

$str = '10<sup>ème</sup><span class="tlost">(-2)</span>';  $arr = array();  preg_match_all('#<.[^<]+>.+?</.[^<]*>#', $str, $arr);

the output 

array(1) {   [0]=>   array(2) {     [0]=>     string(15) "<sup>ème</sup>"     [1]=>     string(31) "<span class="tlost">(-2)</span>"   } }

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