PHP：如何通过；当前$u文件；是否在迭代$\u文件全局变量后转到另一个函数？

如果我提交了一个包含多个文件的表单，如何在执行某种类型的操作后逐个上载每个文件？

在PHP页面中添加类似的内容

//upload image 1
if ($filename1<>"") {
    $filename = $filename1;
    $file = 'file1';
    $temp = explode(".", $_FILES["file1"]["name"]);
    include "upload_file.php";
    $updateimageurl = mysql_query("update yacht set image1 = '$newfilename' where yachtid = '$yachtid'");
}
//upload image 2
if ($filename2<>"") {
    $filename = $filename2;
    $file = 'file2';
    $temp = explode(".", $_FILES["file2"]["name"]);
    include "upload_file.php";
    $updateimageurl = mysql_query("update yacht set image2 = '$newfilename' where yachtid = '$yachtid'");
}

//上传图像1
如果（$filename1“”）{
$filename=$filename1；
$file='file1'；
$temp=explode（“.”，$_文件[“文件1”][“名称”]）；
包括“upload_file.php”；
$updateimageurl=mysql_查询（“更新游艇集图像1='$newfilename'，其中游艇ID='$yachtid'”）；
}
//上传图片2
如果（$filename2“”）{
$filename=$filename2；
$file='file2'；
$temp=explode（“.”，$_文件[“文件2”][“名称”]）；
包括“upload_file.php”；
$updateimageurl=mysql_查询（“更新游艇集图像2='$newfilename'，其中游艇ID='$yachtid'”）；
}

然后，名为“upload_file.php”的文件应该如下所示（如果希望在不同的文件名上进行验证，请更改验证部分）。此外，在将文件保存到您的位置之前，这会将文件重命名为随机名称）

<?php

$length = 30;
$characters = "0123456789abcdefghijklmnopqrstuvwxyz";
$code = "";
for ($p = 0; $p < $length; $p++) {
    $pos = mt_rand(0, strlen($characters)-1);
    $code .= $characters{$pos};
}

$parts = explode('.',$filename);
$extension= end($parts);

$newfilename=$code .".".$extension;
$success = 0;



$allowedExts = array("gif", "jpeg", "jpg", "png");
$extension = end($temp);

if ((($_FILES[$file]["type"] == "image/gif") || ($_FILES[$file]["type"] == "image/jpeg") || ($_FILES[$file]["type"] == "image/jpg")
|| ($_FILES[$file]["type"] == "image/pjpeg") || ($_FILES[$file]["type"] == "image/x-png") || ($_FILES[$file]["type"] == "image/png"))
&& ($_FILES[$file]["size"] < 1000000) && in_array($extension, $allowedExts)) {


    $filenamepng = "./images/yacht/".$code.".png";
    $filenamegif = "./images/yacht/".$code.".gif";
    $filenamejpeg = "./images/yacht/".$code.".jpeg";
    $filenamejpg = "./images/yacht/".$code.".jpg";
    $filenamepjpeg = "./images/yacht/".$code.".pjpeg";
    $filenamexpng = "./images/yacht/".$code.".x-png";

    if (file_exists($filenamepng)||file_exists($filenamegif)||file_exists($filenamejpeg)||file_exists($filenamejpg)||file_exists($filenamepjpeg)||file_exists($filenamexpng)) {
      if (file_exists($filenamepng)) {
        $dir = './images/yacht/';
        $filename = $dir.$code.'.png';
        unlink($filename);
      }
      if (file_exists($filenamegif)) {
        $dir = './images/yacht/';
        $filename = $dir.$code.'.gif';
        unlink($filename);
      }
      if (file_exists($filenamejpeg)) {
        $dir = './images/yacht/';
        $filename = $dir.$code.'.jpeg';
        unlink($filename);
      }
      if (file_exists($filenamejpg)) {
        $dir = './images/yacht/';
        $filename = $dir.$code.'.jpg';
        unlink($filename);
      }
      if (file_exists($filenamepjpeg)) {
        $dir = './images/yacht/';
        $filename = $dir.$code.'.pjpeg';
        unlink($filename);
      }
      if (file_exists($filenamexpng)) {
        $dir = './images/yacht/';
        $filename = $dir.$code.'.x-png';
        unlink($filename);
      }
    }

      move_uploaded_file($_FILES[$file]["tmp_name"],
      "images/yacht/" . $newfilename);
      //echo "Stored in: " . "upload/" . $_FILES["file"]["name"];

    unset($code);
    $success = 1;
}
else
{
    $error = "Your image is over 1mb OR is not in an accepted format; gif, jpeg, jpg, pjpeg, x-png, or png. Please try again.";
}
?>