自动生成验证码，前两位字母，后六位数字

 

 

function v_code(){
//生成采购商验证ID----- start-------
		$length= 8;
        $chars1 = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
		$chars2 = '0123456789';
        $max1 = strlen($chars1) - 1;
		$max2 = strlen($chars2) - 1;
        mt_srand((double)microtime() * 1000000);
        for($i = 0; $i < 2; $i++) {
            $card .= $chars1[mt_rand(0, $max1)];
         }
		for($i = 0; $i < 6; $i++){
		    $card .= $chars2[mt_rand(0, $max2)];
		}
		//生成完毕----- end -------
        echo $card;
}

 

<tr class="verifyID_y">
  <th><em class="red">*</em><{t}>生成验证ID：<{/t}></th>
<td><{input  type="text" name="verifyID"  vtype="required" class="inputstyle" id="verifyID" }></td>
<td><input type="button" value="生成验证ID" onclick="vCode()"></td></tr>

 

	function vCode(){
		new Request({
					url:'index.php?app=b2c&ctl=admin_member&act=v_code',
					onSuccess:function(res)
					{
						$('verifyID').value = res;
				}
		}).post();
    }