ช่วยหน่อยครับ ช่วยดูหน่อยครับว่า ทำใมผม ลบข้อมูลมากกว่า 1 ไม่ได้ครับ

<?php
$result = dbquery("SELECT * FROM step_sentout");
$outmoneydata = dbarray(dbquery("SELECT * FROM step_sentout"));
$outmoneydata['sentout_id'] = isset($outmoneydata['sentout_id']) ? $outmoneydata['sentout_id'] : "0";
$total_outmoney = $outmoneydata['sentout_id'];

$cko_ids = ""; $checkout_count = 0;

if (isset($_POST['checkout'])) {
	if (is_array($_POST['checkout']) && count($_POST['checkout']) > 1) {
		foreach ($_POST['checkout'] as $thisnum) {
			if (isnum($thisnum)) $cko_ids.= ($cko_ids ? "," : "").$thisnum;
			$checkout_count++;
		}
	} else {
		if (isnum($_POST['checkout'][0])) $cko_ids = $_POST['checkout'][0];
		$checkout_count = 1;
	}
}

if ($cko_ids && $checkout_count > 0) {
	if (isset($_POST['deleteout'])) {
		$out = dbarray(dbquery("DELETE FROM step_sentout WHERE sentout_id = (".$cko_ids.")"));
	}
		redirect(FUSION_SELF."?delte=outmoney_ok");
}

if ($total_outmoney) {
echo "<form name='chickout_form' method='post' action='".FUSION_SELF."?check=outmoney_ok'>\n";
echo "<table border='1' cellpadding='0' cellspacing='1' class='center'>\n<tr>\n";
echo "<td align='center' colspan='9' class='tbl'>".$locale['311']."<br /><br />\n</td>\n";
echo "</tr>\n<tr>\n";
echo "<td align='center' class='tbl'>&nbsp;</td>";
echo "<td align='center' class='tbl'>".$locale['302']."</td>";
echo "<td align='center' class='tbl'>".$locale['303']."</td>";
echo "<td align='center' class='tbl'>".$locale['304']."</td>";
echo "<td align='center' class='tbl'>".$locale['305']."</td>";
echo "<td align='center' class='tbl'>".$locale['306']."</td>";
echo "<td align='center' class='tbl'>".$locale['318']."</td>";
echo "<td align='center' class='tbl'>".$locale['319']."</td>";
echo "<td align='center' class='tbl'>".$locale['307']."</td>";
echo "</tr><tr>";
while ($chick1 = mysql_fetch_array($result)){
	echo "<td align='center' class='tbl'><input type='checkbox' name='checkout[]' value='".$chick1['sentout_id']."'></td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_datetoday']."</td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_timetoday']."</td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_user']."</td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_money']."</td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_bank']."</td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_namebank']."</td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_numbank']."</td>";
	echo "<td align='center' class='tbl'>".$chick1['sentout_long']."</td>";
	echo "</tr>";
}
echo "</table>";
echo "<table cellpadding='0' cellspacing='0' width='100%'><tr>\n";
echo "\n<td class='tbl'><a href='#' onclick=\"javascript:setChecked('chickout_form','checkout[]',1);return false;\">".$locale['312']."</a> |\n";
echo "<a href='#' onclick=\"javascript:setChecked('chickout_form','checkout[]',0);return false;\">".$locale['313']."</a></td>\n";
echo "<td align='right' colspan='11' class='tbl'>\n";
echo "<input type='submit' name='deleteout' value='".$locale['314']."' class='button' />\n"; 
echo "</td></tr></table></form>";
} else {
	echo "<div style='text-align:center'><br />".$locale['317']."<br /><br /></div>";
}

echo "<script type='text/javascript'>"."\n"."function setChecked(frmName,chkName,val) {"."\n";
echo "dml=document.forms[frmName];"."\n"."len=dml.elements.length;"."\n"."for(i=0;i < len;i++) {"."\n";
echo "if(dml.elements[i].name == chkName) {"."\n"."dml.elements[i].checked = val;"."\n";
echo "}\n}\n}\n</script>\n";?>