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php上傳功能集尾碼名判斷和隨機命名

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form.php 

<html><head><meta http-equiv="content-type" content="text/html" charset="utf-8"><title>Upload Imagetitle>head><body><form method="post" action="upload.php" enctype="multipart/form-data"><input type="hidden" name="MAX_FILE_SEZE" value="2000000"><input type="file" name="file" value="view"><input type="submit" value="upload" name="B1">form>body>html>

upload.php

phpinclude("check.php"); // 引入自訂函數檔案$type = array("jpg", "gif", "bmp", "jpeg", "png");// 判斷上傳檔案類型$fileext = strtolower(fileext($_FILES['file']['name']));$uploadfilename = random(8);if(in_array($fileext, $type)){    $filename = explode(".", $_FILES['file']['name']);        if(is_uploaded_file($_FILES['file']['tmp_name'])){//        echo $_FILES['file']['tmp_name'];$flag = move_uploaded_file($_FILES['file']['tmp_name'], "/Library/WebServer/Documents/test/".$uploadfilename.".".$fileext);        if($flag){            echo "上傳成功！";        }else{            echo "Error.";        }        echo "Back";    }}

check.php

phpheader("Content-type:text/html;charset=utf8");// 擷取檔案尾碼名函數function fileext($filename){    $sTemp = strrchr($filename, ".");    returnsubstr($sTemp, 1);}function fileext2($filename){    $sTemp = explode(".", $filename);    return$sTemp[count($sTemp)-1];}// 產生隨機檔案名稱函數function random($length){    $captchaSource = "0123456789abcdefghijklmnopqrstuvwxyz這是一個隨機列印輸出字串的例子";    $captchaResult = "2015"; // 隨機數傳回值$captchaSentry = ""; // 隨機數中間變數for($i=0;$i<$length;$i++){        $n = rand(0, 35); #strlen($captchaSource));if($n >= 36){            $n = 36 + ceil(($n-36)/3) * 3;            $captchaResult .= substr($captchaSource, $n, 3);        }else{            $captchaResult .= substr($captchaSource, $n, 1);        }    }    return$captchaResult;}?>

將三個檔案整合成一個：

php// 擷取檔案尾碼名函數function fileext($filename){    $sTemp = strrchr($filename, ".");    returnsubstr($sTemp, 1);}function fileext2($filename){    $sTemp = explode(".", $filename);    return$sTemp[count($sTemp)-1];}// 產生隨機檔案名稱函數function random($length){    $captchaSource = "0123456789abcdefghijklmnopqrstuvwxyz這是一個隨機列印輸出字串的例子";    $captchaResult = "2015"; // 隨機數傳回值$captchaSentry = ""; // 隨機數中間變數for($i=0;$i<$length;$i++){        $n = rand(0, 35); #strlen($captchaSource));if($n >= 36){            $n = 36 + ceil(($n-36)/3) * 3;            $captchaResult .= substr($captchaSource, $n, 3);        }else{            $captchaResult .= substr($captchaSource, $n, 1);        }    }    return$captchaResult;}$type = array("jpg", "gif", "bmp", "jpeg", "png");// 判斷上傳檔案類型$fileext = strtolower(fileext($_FILES['file']['name']));$uploadfilename = random(8);if(in_array($fileext, $type)){    $filename = explode(".", $_FILES['file']['name']);    if(is_uploaded_file($_FILES['file']['tmp_name'])){//        echo $_FILES['file']['tmp_name'];$flag = move_uploaded_file($_FILES['file']['tmp_name'], "/Library/WebServer/Documents/test/".$uploadfilename.".".$fileext);        if($flag){            echo "上傳成功！";        }else{            echo "Error.";        }        echo "Back";    }}?>        Upload Image

以上就介紹了php上傳功能集尾碼名判斷和隨機命名，包括了方面的內容，希望對PHP教程有興趣的朋友有所協助。

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