PHP判斷后綴名和隨機命名實例_PHP教程
推薦：php多文件上傳封裝多文件的上傳實現 1 利用單文件封裝 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 !DOCTYPE html PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN http://www.w3.org/TR/html4/loose.dtd html head meta http-equiv= Content-Type content= text/html; charset=UTF-8 title
具體請看下文代碼示例
form.php
- <html>
- <head>
- <meta http-equiv="content-type" content="text/html" charset="utf-8">
- <title>Upload Image</title>
- </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
- <?php
- include("check.php"); // 引入自定義函數文件
- $type = array("jpg", "gif", "bmp", "jpeg", "png");
- // 判斷上傳文件類型
- $fileext = strtolower(fileext($_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($flag){
- echo "上傳成功！";
- }else{
- echo "Error.";
- }
- echo "<a href='javascript:history.go(-1)'>Back</a>";
- }
- }
check.php
- <?php
- header("Content-type:text/html;charset=utf8");
- // 獲取文件后綴名函數
- function fileext($filename){
- $sTemp = strrchr($filename, ".");
- return substr($sTemp, 1);
- }
- function fileext2($filename){
- $sTemp = explode(".", $filename);
- return $sTemp[count($sTemp)-1];
- }
- // 生成隨機文件名函數
- function random($length){
- $captchaSource = "0123456789abcdefghijklmnopqrstuvwxyz這是一個隨機打印輸出字符串的例子";
- $captchaResult = "2015"; // 隨機數返回值
- $captchaSentry = ""; // 隨機數中間變量
- for($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 $captchaResult;
- }
- ?>
將三個文件整合成一個：
- <?php
- // 獲取文件后綴名函數
- function fileext($filename){
- $sTemp = strrchr($filename, ".");
- return substr($sTemp, 1);
- }
- function fileext2($filename){
- $sTemp = explode(".", $filename);
- return $sTemp[count($sTemp)-1];
- }
- // 生成隨機文件名函數
- function random($length){
- $captchaSource = "0123456789abcdefghijklmnopqrstuvwxyz這是一個隨機打印輸出字符串的例子";
- $captchaResult = "2015"; // 隨機數返回值
- $captchaSentry = ""; // 隨機數中間變量
- for($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");
- // 判斷上傳文件類型
- $fileext = strtolower(fileext($_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 "<a href='javascript:history.go(-1)'>Back</a>";
- }
- }
- ?>
- <html>
- <head>
- <meta http-equiv="content-type" content="text/html" charset="utf-8">
- <title>Upload Image</title>
- </head>
- <body>
- <form method="post" action="" 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>
分享：php生成圓角圖片的方法具體如下： 代碼如下:?php $image_file = $_GET['src']; $corner_radius = isset($_GET['radius']) ? $_GET['radius'] : 20; // The default corner radius is set to 20px $topleft = (isset($_GET['topleft']) and $_GET['topleft'] == no) ? false : true; // Top-l
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