foreach - PHP explode then double loop -

i trying split string stay under limit of 70 characters... however, when this, loop stop right when gets first 70 characters , doesn't attempt 2nd set. reason i'm going route , not use str_split keep entire words don't send out messages half of word. if 2nd split has less 70 characters, please still send out...any kind of appreciated.

$message="a new powerful earthquake convulsed traumatized nation of nepal on tuesday, leveling buildings damaged devastating quake killed thousands of people less 3 weeks ago."  $msg = explode(' ',$message);   foreach($msg $key) {          $keylen = strlen($key);     $msglen = $msglen + $keylen;     if($msglen<70) {     $msgs .=$key." ";     // $agi->verbose("$msgs");     } else {         $params = array(             'src' => '18009993355',             'dst' => $callerid,             'text' => $msgs,             'type' => 'sms',         );     // $agi->verbose("sending: $msgs");     $response = $p->send_message($params);     $msgs = "";     $msglen = 0;     }  } 

<?php $message = "a new powerful earthquake convulsed traumatized nation of nepal on tuesday, leveling buildings damaged devastating quake killed thousands of people less 3 weeks ago.";  define ("max_packet_size", 70);  $msg        = explode (' ',$message); $indexes    = array (0); $actualsize = 0 ; ($i=0 ; $i<count($msg) ; $i++) {     if ($actualsize + strlen ($msg[$i]) <= max_packet_size ) {         $actualsize += strlen ($msg[$i]);         if (($i+1) < count($msg)) {             $actualsize++;         }     }else {         $indexes[]  = $i;         $actualsize = 0 ;     } } $indexes[] = count ($msg);   ($i=1 ; $i<count($indexes) ; $i++) {     $temp = array_extract ($msg, $indexes[$i-1], $indexes[$i]);     var_dump(implode (' ', $temp));     $params = array ('src'  => '18009993355',                      'dst'  => $callerid,                      'text' => implode (' ', $temp) ,                      'type' => 'sms');     // $agi->verbose("sending: $msgs");     $response = $p->send_message($params); }  function array_extract ($array, $start, $stop) {     $temp = array();     ($i=$start ; $i<$stop ; $i++) {         $temp[] = $array[$i];     }     return $temp; }