Question

我有下面的代码，没有上传图像试过很多东西，但不起作用。我无法弄清楚问题是什么，但是在日志之前使用了相同的代码。

HTML表单

<form method="post" action="" enctype="multipart/form-data" name="form1">
<input size="25" name="file" type="file" style="font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10pt" class="box"/>
<input type="submit" value="Upload" name="submit"/>
</form>

最后一次尝试代码如下：

$change="";
$abc="";


define ("MAX_SIZE","12000");
function getExtension($str) {
        $i = strrpos($str,".");
        if (!$i) { return ""; }
        $l = strlen($str) - $i;
        $ext = substr($str,$i+1,$l);
        return $ext;
}

$errors=0;

if($_SERVER["REQUEST_METHOD"] == "POST"){
    $image =$_FILES["file"]["name"];
    $uploadedfile = $_FILES['file']['tmp_name'];


if ($image) {

        $filename = stripslashes($_FILES['file']['name']);

        $extension = getExtension($filename);
        $extension = strtolower($extension);


if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif")) {
            $change='<div class="msgdiv">Unknown Image extension </div> ';
            $errors=1;
}else{
$size=filesize($_FILES['file']['tmp_name']);

if ($size > MAX_SIZE*1024){
    $change='<div class="msgdiv">You have exceeded the size limit!</div> ';
    $errors=1;
}


if($extension=="jpg" || $extension=="jpeg" ){
$uploadedfile = $_FILES['file']['tmp_name'];
$src = imagecreatefromjpeg($uploadedfile);

}else if($extension=="png"){
$uploadedfile = $_FILES['file']['tmp_name'];
$src = imagecreatefrompng($uploadedfile);

}else {
$src = imagecreatefromgif($uploadedfile);
}

echo $scr;

list($width,$height)=getimagesize($uploadedfile);

$newwidth=1990;
$newheight=1100;
$tmp=imagecreatetruecolor($newwidth,$newheight);
imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,$width,$height);

$imu    =   mysql_query("select max(id)+1 as id from menu_items");
$ints   =   mysql_fetch_array($imu);
$chk    =   $ints['id'];

$ids    =   $ints['id'];

$srids  =   $ints['showroom_id'];

$name = $_FILES["file"]["name"];
$ext = end((explode(".", $name))); # extra () to prevent notice

$ses_msr    =   $_SESSION['ses_member_id'];
$folderPath = "images/rest_menu_items";
mkdir($folderPath);

$filename = "images/rest_menu_items/".$ids.'.'.$ext;
$filename1 = "images/small". $_FILES['file']['name'];

imagejpeg($tmp,$filename,100);
mysql_query("
UPDATE menu_items
SET
    filename='".$ids.'.'.$ext."'
WHERE
    id='".$_GET['id']."'
");

imagedestroy($src);
imagedestroy($tmp);
}}

}

Answer 1

只需更改Function语法即可。在function关键字

之后添加空格

function getExtension($str){
 $i=strrpos($str,".");
 if(!$i){return"";}
 $l=strlen($str)-$i;
 $ext=substr($str,$i+1,$l);
 return$ext;
}

在代码下方使用错误。

if (!ini_get('display_errors')) {
    ini_set('display_errors', '1');
}

Answer 2

解决这些问题：

第6行：

function getExtension($str){

第48行：

echo $src;

第79行：

mkdir($folderPath);

并确保您具有写入权限。

PHP错误日志也会有很大帮助。如果你放

，你可以调试你的代码

error_reporting( E_ALL );

到文件的开头。

还要确保已安装PHP GD。

创建仅包含内容的文件。

<?php
phpinfo(INFO_MODULES);
?>

应该有“ GD支持已启用”如果找不到，则需要安装it。

如果存在，则检查write permissions，文件test.txt必须存在。因此，创建空文件test.txt来测试它。

$filename = 'test.txt';
if (is_writable($filename)) {
    echo 'The file is writable';
} else {
    echo 'The file is not writable';
}

如果检查了这些内容，则以下代码将起作用。

经过测试的代码。我删除了查询和SESSION数据，因为我无法调试它们而没有所有代码。

<?php
$change="";
$abc="";


define ("MAX_SIZE","12000");
function getExtension($str) {
        $i = strrpos($str,".");
        if (!$i) { return ""; }
        $l = strlen($str) - $i;
        $ext = substr($str,$i+1,$l);
        return $ext;
}

$errors=0;

if($_SERVER["REQUEST_METHOD"] == "POST"){
    $image =$_FILES["file"]["name"];
    $uploadedfile = $_FILES['file']['tmp_name'];


if ($image) {

        $filename = stripslashes($_FILES['file']['name']);

        $extension = getExtension($filename);
        $extension = strtolower($extension);


if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif")) {
            $change='<div class="msgdiv">Unknown Image extension </div> ';
            $errors=1;
}else{
$size=filesize($_FILES['file']['tmp_name']);

if ($size > MAX_SIZE*1024){
    $change='<div class="msgdiv">You have exceeded the size limit!</div> ';
    $errors=1;
}


if($extension=="jpg" || $extension=="jpeg" ){
$uploadedfile = $_FILES['file']['tmp_name'];
$src = imagecreatefromjpeg($uploadedfile);

}else if($extension=="png"){
$uploadedfile = $_FILES['file']['tmp_name'];
$src = imagecreatefrompng($uploadedfile);

}else {
$src = imagecreatefromgif($uploadedfile);
}

echo $src;

list($width,$height)=getimagesize($uploadedfile);

$newwidth=1990;
$newheight=1100;
$tmp=imagecreatetruecolor($newwidth,$newheight);
imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,$width,$height);

imagejpeg($tmp,"Test.jpg",100);


imagedestroy($src);
imagedestroy($tmp);
}}

}
?>

PHP图像上传无效

2 个答案: