用于上传文件不起作用的PHP代码 [英] Php Code for uploading a file not working

问题描述

<?php
    //this function returns a random 5-char filename with the jpg extension
    function randomFileName()
    {
       $length = 5;
       $characters = 'abcdefghijklmnopqrstuvwxyz';
       $string = '';
       for ($p = 0; $p < $length; $p++) {
          $string .= $characters[mt_rand(0, strlen($characters))];
       }
       return $string . '.jpg';
    }
    //create the random filename string and uploads target variables
    $randomString = randomFileName();
    $target = 'http://pindots.com/admin/pin/upload/';
    $target = $target . $randomString;
    if(move_uploaded_file($_FILES['media']['tmp_name'], $target))
    {
        //output the location to our image
        echo 'http://pindots.com/admin/pin/upload' . $randomString;
    }
    else
    {
        echo "false";
    }
?>

推荐答案

长度 = 5 ;

length = 5;

characters = ' ABCDEFGHIJKLMNOPQRSTUVWXYZ;

characters = 'abcdefghijklmnopqrstuvwxyz';

string = ' ';
for （

string = ''; for (

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