PHP 图片 uploader 不适用于 Capital JPG 扩展

Question

提前致谢。

我有一个自己构建的 php 图片 uploader ，它工作得很好。但是，我尝试上传 .JPG 扩展图像，但没有成功。请注意，我指的是大写 JPG 而不是小写 jpg。 .png、.jpg、.gif 都可以正常工作并上传，创建缩略图等等。大写的 .JPG 出于某种原因无法正常工作。请参阅下面的代码。它是不同的 MIME 类型吗？

查询(出于安全目的我将其删除)工作正常。信息被存储。由于大写的 .JPG 扩展名，文件和缩略图不会移动到正确的文件夹。任何帮助都会很棒，我做了一些研究并尝试了 Apache 添加类型 JPG，但没有用。

if(isset($_POST['submit']))
{

    $getcatid = mysql_query('"query here"');
    $rescatid = mysql_fetch_assoc($getcatid);
    $catid = $rescatid['catid'];

    if ((($_FILES['file']['type'] == "image/png") || 
        ($_FILES['file']['type'] == "image/jpeg") ||
        ($_FILES['file']['type'] == "image/pjpeg")) && ($_FILES['file']['size'] < 2097152))
    {

        if (file_exists("location here".time().'_'.$_FILES["file"]["name"]))
            {
                echo '<div class="error">'.$_FILES["file"]["name"].' already exists</div>'; 

            }
        else
            {

                    $filename = time().'_'.$_FILES['file']['name'];  
                    $source = $_FILES['file']['tmp_name'];  
                    $target = 'location here'.$filename;  

                    move_uploaded_file($source, $target); 

                    createThumbnail($filename);  

                $date = time();
                $store = '"query here"';';

                mysql_query ($store);

                echo '<div class="success">Image added</div>';

            }
    }

    else
    {
        echo '<div class="error">Invalid file, only jpg, jpeg, or png file types allowed</div>';
    }

}

if(isset($_POST['multisubmit']))
{

    $getcatid = mysql_query('"query here"');
    $rescatid = mysql_fetch_assoc($getcatid);
    $catid = $rescatid['catid'];


    for($i=0;$i< count($_FILES['multifile']['type']);$i++)
    {

        if ((($_FILES['multifile']['type'][$i] == "image/png") || 
        ($_FILES['multifile']['type'][$i] == "image/jpeg") || 
        ($_FILES['multifile']['type'][$i] == "image/pjpeg")) && 
        ($_FILES['multifile']['size'][$i] < 2097152))
        {

            $filename = time().'_'.$_FILES['multifile']['name'][$i]; 
            $source = $_FILES['multifile']['tmp_name'];   
            $target = 'location here'.$filename;  

            if(move_uploaded_file ($_FILES['multifile']['tmp_name'][$i],$target))
            {
                createThumbnail($filename);  

                $date = time();
                $store = '"query here"';';

                mysql_query ($store);

                echo '<div class="success">Image: '.$filename.' added, view individual album to edit image descriptions</div>';
            } 
            else
            {
            echo '<div class="error">Invalid file'.$filename.', only jpg, jpeg, or png file types allowed</div>';
            }        
        }
    }
}

缩略图功能，如果有帮助的话:

function createThumbnail($filename) {  
$final_width_of_image = 160;  
$path_to_image_directory = 'path here';  
$path_to_thumbs_directory = 'path here';

if(preg_match('/[.](jpg)$/', $filename)) {  
    $im = imagecreatefromjpeg($path_to_image_directory . $filename);  
} else if (preg_match('/[.](gif)$/', $filename)) {  
    $im = imagecreatefromgif($path_to_image_directory . $filename);  
} else if (preg_match('/[.](png)$/', $filename)) {  
    $im = imagecreatefrompng($path_to_image_directory . $filename);  
}  

$ox = imagesx($im);  
$oy = imagesy($im);  

$nx = $final_width_of_image;  
$ny = floor($oy * ($final_width_of_image / $ox));  

$nm = imagecreatetruecolor($nx, $ny);  

imagecopyresized($nm, $im, 0,0,0,0,$nx,$ny,$ox,$oy);  

if(!file_exists($path_to_thumbs_directory)) {  
  if(!mkdir($path_to_thumbs_directory)) {  
       die("There was a problem. Please try again!");  
  }  
   }  

imagejpeg($nm, $path_to_thumbs_directory . $filename, 100);  

}

Answer 1

从您的缩略图代码:

if(preg_match('/[.](jpg)$/', $filename)) 

这只会匹配小写的“jpg”。如果要匹配大写或小写，可以添加 /i 标志以区分大小写:

if(preg_match('/[.](jpg)$/i', $filename))