Url tronqué avec preg_replace

Bonjour,
voila j'ai placer un preg replace afin de mettre les lient url cliquables,
les liens s'affiche a deux endroite different, sur un endroit il est cliquable et entier, sur l'autre endroit il est coupé et non cliquable.
je n'arrive pas a trouver ce qui peut faire ca !!

case 'new' : {
					
					// Insert data of the news into database and initiate the object 
					// with those values
					$wall_type = $parms['wall_type'];
					$type = $parms['type'];
					$owner_id = $parms['owner_id'];
					$concerned_id = $parms['concerned_id'];
					$content = addslashes(utf8_decode($parms['content']));
					$date = date('Y-m-d H:i:s');
					$reference = $parms['reference'];

					switch($wall_type) {
						// Insert the news into the table which matches with its type using user_id
						case 'MAIN' : {
							switch ($type) {
								case 'STATUTE' : {
									$ins_req = "INSERT INTO '".$this->config['bdd_table']
										."statutes'('user_id','text','date') 
										VALUES ('".$owner_id."','".$content."','".$date."');";
									$content = preg_replace('#http://[?a-z0-9._/=]+#i', '<a href="$0"target="_blank">$0</a>', $content);
									
									
									break;									
								}
							}
						}
						

						case 'USER' : {
							
							switch ($type) {
								
								case 'STATUTE' : {
									$ins_req = "INSERT INTO '".$this->config['bdd_table']
										."statutes'('user_id','text','date') 
										VALUES ('".$owner_id."','".$content."','".$date."');";
									$content = preg_replace('#http://[a-z0-9._/-=?]+#i', '<a href="$0"target="_blank">$0</a>', $content);
										
									$recordset = mysql_query($ins_req);
									if (!$recordset) {
										// Error during the insert
										$answer = false;
									}
									
									break;
								}
								case 'WALL' : {
									$ins_req = "INSERT into '".$this->config['bdd_table']
										."wall'('user_id','sender_id','text','date') 
										VALUES ('".$owner_id."','".$concerned_id."','".$content."','".$date."');";
									 $content = preg_replace('#http://[a-z0-9._/-=?]+#i', '<a href="$0"target="_blank">$0</a>', $content);
										
									$recordset = mysql_query($ins_req);
									if (!$recordset) {
										// Error during the insert
										$answer = false;
									}

									break;