PHP多图上传取值有关问题

PHP多图上传取值问题
搞了一个多图上传，INPUT里指定了3个上传图片功能，自已搞了一下，发现上传成功了，图1能自动改名，图2和3不能自动改名，请问要怎样改？

$uploaddir = "uploadfiles/";//设置文件保存目录 注意包含/ 
$type=array("jpg","gif","bmp","jpeg","png");//设置允许上传文件的类型 
$patch="uploadfiles/";//程序所在路径 

//获取文件后缀名函数 
function fileext($filename) 
{ 
return substr(strrchr($filename, '.'), 1); 
} 
//获取文件后缀名函数 
function fileext2($filename2) 
{ 
return substr(strrchr($filename2, '.'), 1); 
} 
//获取文件后缀名函数 
function fileext3($filename3) 
{ 
return substr(strrchr($filename3, '.'), 1); 
} 
//生成随机文件名函数 
function random($length) 
{ 
$hash = 'java-'; 
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz'; 
$max = strlen($chars) - 1; 
mt_srand((double)microtime() * 1000000); 
for($i = 0; $i < $length; $i++) 
{ 
$hash .= $chars[mt_rand(0, $max)]; 
} 
return $hash; 
} 
$a=strtolower(fileext($_FILES['img1']['name'])); 
$b=strtolower(fileext2($_FILES['img2']['name'])); 
$c=strtolower(fileext3($_FILES['img3']['name'])); 
//判断文件类型 
if(!in_array(strtolower(fileext($_FILES['img1']['name'])),$type)) 
{ 
$text=implode(",",$type); 
echo "您只能上传以下类型文件: ",$text,"
"; 
} 
//生成目标文件的文件名 
else{ 
$filename=explode(".",$_FILES['img1']['name']); 
$filename2=explode(".",$_FILES['img2']['name']);
$filename3=explode(".",$_FILES['img3']['name']);
do 
{ 
$filename[0]=random(10); //设置随机数长度 
$name=implode(".",$filename); 
//$name1=$name.".Mcncc"; 
https://www.gxlcms.com/$uploadfile=$uploaddir.$name; 
$filename[1]=random(10); //设置随机数长度 
$name2=implode(".",$filename2); 
//$name1=$name.".Mcncc"; 
https://www.gxlcms.com/$uploadfile2=$uploaddir.$name2; 
$filename[2]=random(10); //设置随机数长度 
$name3=implode(".",$filename3); 
//$name1=$name.".Mcncc"; 
https://www.gxlcms.com/$uploadfile3=$uploaddir.$name3; 
} 
while(file_exists(https://www.gxlcms.com/$uploadfile)); 
if (move_uploaded_file($_FILES['img1']['tmp_name'],https://www.gxlcms.com/$uploadfile)){ 

//if(is_uploaded_file($_FILES['file']['tmp_name'])){ 
//

输出图片预览
//echo "您的文件已经上传完毕 上传图片预览:
";
//echo"
继续上传";
//}
//else{
//echo "上传失败！";
}
if (move_uploaded_file($_FILES['img2']['tmp_name'],https://www.gxlcms.com/$uploadfile2)){

//if(is_uploaded_file($_FILES['file']['tmp_name'])){
//输出图片预览
//echo "您的文件已经上传完毕 上传图片预览:
";
//echo"
继续上传";
//}
//else{
//echo "上传失败！";
}
if (move_uploaded_file($_FILES['img3']['tmp_name'],https://www.gxlcms.com/$uploadfile3)){

//if(is_uploaded_file($_FILES['file']['tmp_name'])){
//输出图片预览
//echo "您的文件已经上传完毕 上传图片预览:
";
//echo"
继续上传";
//}
//else{
//echo "上传失败！";
}
}


$SourceFileName=https://www.gxlcms.com/$uploadfile;
$SourceFileName2=https://www.gxlcms.com/$uploadfile2;
$SourceFileName3=https://www.gxlcms.com/$uploadfile3;
------解决思路----------------------
這裡有問題， 不應該是$filename[0],$filename[1],$filename[2]；而應該是$filename[0],$filename2[0],$filename3[0]

do 
{ 
$filename[0]=random(10); //设置随机数长度 
$name=implode(".",$filename); 
//$name1=$name.".Mcncc"; 
https://www.gxlcms.com/$uploadfile=$uploaddir.$name; 
$filename[1]=random(10); //设置随机数长度 
$name2=implode(".",$filename2); 
//$name1=$name.".Mcncc"; 
https://www.gxlcms.com/$uploadfile2=$uploaddir.$name2; 
$filename[2]=random(10); //设置随机数长度 
$name3=implode(".",$filename3); 
//$name1=$name.".Mcncc"; 
https://www.gxlcms.com/$uploadfile3=$uploaddir.$name3; 
}

改好后的程序

$uploaddir = "uploadfiles/"; //设置文件保存目录 注意包含/
$type = array(
    "jpg",
    "gif",
    "bmp",
    "jpeg",
    "png"
); //设置允许上传文件的类型
$patch = "uploadfiles/"; //程序所在路径
print_r($_FILES);
//获取文件后缀名函数
function fileext($filename) {
    return substr(strrchr($filename, '.') , 1);
}
//获取文件后缀名函数
function fileext2($filename2) {
    return substr(strrchr($filename2, '.') , 1);
}
//获取文件后缀名函数
function fileext3($filename3) {
    return substr(strrchr($filename3, '.') , 1);
}
//生成随机文件名函数
function random($length) {
    $hash = 'java-';
    $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
    $max = strlen($chars) - 1;
    mt_srand((double)microtime() * 1000000);
    for ($i = 0; $i < $length; $i++) {
        $hash.= $chars[mt_rand(0, $max) ];
    }
    return $hash;
}
$a = strtolower(fileext($_FILES['img1']['name']));
$b = strtolower(fileext2($_FILES['img2']['name']));
$c = strtolower(fileext3($_FILES['img3']['name']));
//判断文件类型
if (!in_array(strtolower(fileext($_FILES['img1']['name'])) , $type)) {
    $text = implode(",", $type);
    echo "您只能上传以下类型文件: ", $text, "
";
}
//生成目标文件的文件名
else {
    $filename = explode(".", $_FILES['img1']['name']);
    $filename2 = explode(".", $_FILES['img2']['name']);
    $filename3 = explode(".", $_FILES['img3']['name']);
    do {
        $filename[0] = random(10); //设置随机数长度
        $name = implode(".", $filename);
        //$name1=$name.".Mcncc";
        https://www.gxlcms.com/$uploadfile = $uploaddir . $name;
        $filename2[0] = random(10); //设置随机数长度
        $name2 = implode(".", $filename2);
        //$name1=$name.".Mcncc";
        https://www.gxlcms.com/$uploadfile2 = $uploaddir . $name2;
        $filename3[0] = random(10); //设置随机数长度
        $name3 = implode(".", $filename3);
        //$name1=$name.".Mcncc";
        https://www.gxlcms.com/$uploadfile3 = $uploaddir . $name3;
    } while (file_exists(https://www.gxlcms.com/$uploadfile));

    if (move_uploaded_file($_FILES['img1']['tmp_name'], https://www.gxlcms.com/$uploadfile)) {
        //if(is_uploaded_file($_FILES['file']['tmp_name'])){
        //

输出图片预览
//echo "您的文件已经上传完毕 上传图片预览:
";
//echo"
继续上传";
//}
//else{
//echo "上传失败！";

}
if (move_uploaded_file($_FILES['img2']['tmp_name'], https://www.gxlcms.com/$uploadfile2)) {
//if(is_uploaded_file($_FILES['file']['tmp_name'])){
//输出图片预览
//echo "您的文件已经上传完毕 上传图片预览:
";
//echo"
继续上传";
//}
//else{
//echo "上传失败！";

}
if (move_uploaded_file($_FILES['img3']['tmp_name'], https://www.gxlcms.com/$uploadfile3)) {
//if(is_uploaded_file($_FILES['file']['tmp_name'])){
//输出图片预览
//echo "您的文件已经上传完毕 上传图片预览:
";
//echo"
继续上传";
//}
//else{
//echo "上传失败！";

}
}
$SourceFileName = https://www.gxlcms.com/$uploadfile;
$SourceFileName2 = https://www.gxlcms.com/$uploadfile2;
$SourceFileName3 = https://www.gxlcms.com/$uploadfile3;
?>