PHP instance: code for uploading and verifying multiple images

The upload of a single image is not complex. it involves uploading multiple images and verifying the image format to ensure that the uploaded images are always images, it is not complex to prevent uploading other files to a single image on the server. this involves uploading multiple images and verifying the image format to ensure that the uploaded images must be images, prevent uploading other files to the server. The basic implementation algorithm uses arrays to submit an array of all images and process the elements of the array one by one. The reference content is as follows :? Php // image directory $ img_di

Uploading a single image is not complex. this involves uploading multiple images and verifying the image format. This ensures that the uploaded images are always used to prevent uploading other files to the server.

The basic implementation algorithm uses arrays to submit an array of all images and process the elements of the array one by one.

// If no image is selected
If (empty ($ result ))
{
Prompt_msg ("error message", "No image is selected. "," Back to the previous step "," uploadimg. php? Action = upload ");
Exit ();
}

// Display all uploaded results
Echo"

";} // End if} // End 

Reference content is as follows: // Image directory $ Img_dir = "../upload /"; //...... Html display Upload interface /* Image Upload processing */ // Upload the image to the server // Initialize the variable $ Uploaded = 0; $ Unuploaded = 0; // Only five images can be uploaded For ($ I = 0; $ I <= 5; $ I ++) { // Obtain the information of the current image $ Is_file = $ _ FILES ['imgfile'] ['name'] [$ I]; // If the current image is not empty If (! Empty ($ is_file )) { // Store the information of the current image in the variable $ Result [$ I] ="
". $ _ FILES ['imgfile'] ['name'] [$ I]."	". Round ($ _ FILES ['imgfile'] ['size'] [$ I]/1024, 2)." K	". $ _ FILES ['imgfile'] ['type'] [$ I]."	"; // Determine whether the type of the uploaded image is jpg, gif, png, or bmp, and whether the upload is successful. If ( $ _ FILES ['imgfile'] ['type'] [$ I] = "image/pjpeg" | $ _ FILES ['imgfile'] ['type'] [$ I] = "image/gif" | $ _ FILES ['imgfile'] ['type'] [$ I] = "image/x-png" | $ _ FILES ['imgfile'] ['type'] [$ I] = "image/bmp" ) { // If the uploaded file does not exist on the server If (! File_exists ($ img_dir. $ _ FILES ['imgfile'] ['name'] [$ I]) { // Transfer the image file from the temporary folder to the directory we specified for Upload Move_uploaded_file ($ _ FILES ['imgfile'] ['tmp _ name'] [$ I], $ Img_dir. $ _ FILES ['imgfile'] ['name'] [$ I]); $ Result [$ I]. = "successful "; $ Uploaded ++; } Else // if the file already exists on the server { $ Result [$ I]. = "the file already exists "; $ Unuploaded ++; Continue; } } Else { $ Result [$ I]. = "failed "; $ Unuploaded ++; } $ Result [$ I]. ="

Foreach ($ result as $ value)
{
Echo $ value;
}

Echo"

";

File name	Size	Type	Upload result
Upload ". ($ uploaded + $ unuploaded).", successful: $ uploaded, failed: $ unuploaded
[Continue uploading] [browsing Images]

";
?>