Le mai poti sparge dupa spatiu si lungime minima:
Cod:
<?php                                                                                                                                                                                                                                                                          
$str="0755 065716 0744 678 069 0766 497 532 076 071 9733 0740 219 163 +40720 55 22";                                                                                                                                                                                           
$c=0;                                                                                                                                                                                                                                                                          
for ($x=0; $x < strlen($str)-1; $x++){                                                                                                                                                                                                                                         
    if($str[$x] == ' ' && ($str[$x+1] == '0' || $str[$x+1] == '+') && $c >= 10){                                                                                                                                                                                               
        $str[$x] = '$';                                                                                                                                                                                                                                                        
        $c = 0;                                                                                                                                                                                                                                                                
    } else {                                                                                                                                                                                                                                                                   
        $c++;                                                                                                                                                                                                                                                                  
    }                                                                                                                                                                                                                                                                          
}                                                                                                                                                                                                                                                                              
$str = preg_replace('/\s+/', '', $str);                                                                                                                                                                                                                                        
var_dump(explode('$',$str));
Dupa executie:
Cod:
array(6) {
  [0]=>
  string(10) "0755065716"
  [1]=>
  string(10) "0744678069"
  [2]=>
  string(10) "0766497532"
  [3]=>
  string(10) "0760719733"
  [4]=>
  string(10) "0740219163"
  [5]=>
  string(10) "+407205522"
}