rejet d'une requête sql, un prb d'orthographe??

bonjour a tous, je suis en train de faire un petit fichier php pour écrire dans ma base de donnée des données préétablie.

Cela avance pas mal vue la simplicité de la chose, mais un bug me résiste.

<?php
$post_id ='';
$topic_id ='411';
$forum_id ='5';
$poster_id ='148';
$icon_id ='0';
$poster_ip = '0x39302e31372e3234332e3833';
$post_time = '';
$post_approved ='1';
$post_reported ='0';
$enable_bbcode ='1';
$enable_smilies ='1';
$enable_magic_url ='1';
$enable_sig ='1';
$post_username ='';
$post_subject = 'RADAC';
$post_text ='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';
$post_checksum ='0x6437633566623466653434303838636432653238353033663064666131396462';
$post_attachment ='0';
$bbcode_bitfield ='';
$bbcode_uid='';
$post_postcount ='1';
$post_edit_time ='0';
$post_edit_reason ='';
$post_edit_user ='0';
$post_edit_count ='0';
$post_edit_locked ='0';
$host = '***';
$user = '***';
$pass = '***';
$db = '***';

// connection à la DB
mysql_connect ($host,$user,$pass) or die ('Erreur : '.mysql_error() );
mysql_select_db($db) or die ('Erreur :'.mysql_error());
$sql= "INSERT INTO phpbb_posts2(post_id,topic_id,forum_id,poster_id,icon_id,poster_ip,post_time,post_approved,post_reported,enable_bbcode,enable_smilies,enable_magic_url,enable_sig,post_username,post_subject,post_text,post_checksum,post_attachment,bbcode_bitfield,bbcode_uid,post_postcount,post_edit_time,post_edit_reason,post_edit_user,post_edit_count,post_edit_locked) VALUES('$post_id','$topic_id','$forum_id','$poster_id','$icon_id','$poster_ip','$post_time','$post_approved','$post_reported','$enable_bbcode','$enable_smilies','$enable_magic_url','$enable_sig,'$post_username','$post_subject','$post_text','$post_checksum','$post_attachment','$bbcode_bitfield','$bbcode_uid','$post_postcount','$post_edit_time','$post_edit_reason','$post_edit_user','$post_edit_count','$post_edit_locked')";
mysql_query($sql) or die ('Erreur SQL ! <br>'.$sql.'<br>'.mysql_error());

?>

et celà me retourne une page d'erreur

Erreur SQL ! 
INSERT INTO phpbb_posts2(post_id,topic_id,forum_id,poster_id,icon_id,poster_ip,post_time,post_approved,post_reported,enable_bbcode,enable_smilies,enable_magic_url,enable_sig,post_username,post_subject,post_text,post_checksum,post_attachment,bbcode_bitfield,bbcode_uid,post_postcount,post_edit_time,post_edit_reason,post_edit_user,post_edit_count,post_edit_locked) VALUES('','411','5','148','0','0x39302e31372e3234332e3833','','1','0','1','1','1','1,'','RADAC','0x4a65206d65207072c3a973656e74652070617320706c75732071756520c3a76120636172206365727461696e206427656e74726520766f7573206f6e742064c3a96a6120657520c3a020666169726520c3a0206d6f692c0a0a6a6520737569732052414441432028726f626f742064652052c3a9706f6e7365204175746f6d61746973c3a92061752044656d616e6465206427416d697320657420646520436f6e766572736174696f6e292e0a0a5b696d673a67356464616639745d68747470262335383b2f2f777777262334363b6a6575782d737472617465676965262334363b636f6d2f66696c6561646d696e2f61727469636c65732f75706c6f61642f6a732f746125323068656c69636f262334363b6a70675b2f696d673a67356464616639745d0a0a20537569746520c3a0206d612070726f636861696e6520696e74c3a967726174696f6e2064616e73206c6520666f72756d2c206f6e206d2761206372c3a9657220756e20636f6d707465206166696e20717565206a652070756973736520766f75732074656e697220617520636f7572616e7420656e2074656d70732072c3a9656c6c6520646520746f75732063652071756920736520706173736520737572206c612073657373696f6e20617520706f696e742064652076756520666f6e6374696f6e6e656d656e7420676c6f62616c2e0a0a4d6f6e20696e746572636f6e6e6578696f6e2065737420656e20636f757273206427c3a9747564652e200a5b696d673a67356464616639745d68747470262335383b2f2f777777262334363b676c6f62616c737769746368262334363b636f6d2f6d656469612f36353334392f66696272652d6f707469637332262334363b6a70675b2f696d673a67356464616639745d0a4a6520766f7573207469656e6472616920756e20636f7572616e74206465206d6f6e2064c3a976656c6f7070656d656e742e','0x6437633566623466653434303838636432653238353033663064666131396462','0','','','1','0','','0','0','0')
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'RADAC','0x4a65206d65207072c3a973656e74652070617320706c75732071756520c3a761206361' at line 1

et je ne trouve pas, encore un coup stupide je le sens. Si quelqu'un pouveait jeter un oeil. merci d'avance

Flo