PHP File Upload reference configuration large file upload,
PHP uses the Super global variable array $_files to record file upload related information, before the php file upload, you can adjust the php.ini in the relevant configuration instructions, to control the upload related details.
1.file_uploads=on/off
Whether to allow uploading of files via HTTP
2.max_execution_time=30
Allow the maximum execution time of the script, which will be an error over this time
3.memory_limit=50m
Set the maximum amount of memory that a script can allocate to prevent runaway scripting from consuming too much RAM, which is set only at compile time
The--ENABLE-MEMORY-LIMIT flag is in effect.
4.upload_max_filesize=20m
Maximum size allowed for uploaded files, this instruction must be less than post_max_size
5.upload_tmp_dir
Upload Files Temporary storage directory
6.post_max_size=30m
Allow post mode to accept maximum size
The contents of the $_files array are as follows: www.jbxue.com
$_files[' myFile ' [' Name '] The original name of the client's last file.
The MIME type of the $_files[' myFile ' [' type '] file requires the browser to provide support for that information, such as "Image/gif".
$_files[' myFile ' [' size '] the size of the uploaded file, in bytes.
$_files[' myFile ' [' tmp_name '] files are uploaded after the temporary file name stored on the server, usually the system default. Can be specified in the php.ini upload_tmp_dir, but the putenv () function setting is not working.
$_files[' myFile ' [' Error '] and the file upload related status code. [' ERROR '] was added in version PHP 4.2.0. Here is a description of it: (they become constants after PHP3.0)
Upload_err_ok
Value: 0; No error occurred and the file upload was successful.
Upload_err_ini_size
Value: 1; The uploaded file exceeds the value of the Upload_max_filesize option limit in php.ini.
Upload_err_form_size
Value: 2; The size of the uploaded file exceeds the value specified by the Max_file_size option in the HTML form.
Upload_err_partial
Value: 3; Only part of the file is uploaded.
Upload_err_no_file
Value: 4; No files were uploaded.
Value: 5; The upload file size is 0.
After the file is uploaded, it is stored in the temp directory by default, and you must remove it from the temporary directory or move it to another location, or delete it if it is not. That is, regardless of whether or not the upload succeeds, the files in the temp directory will be deleted after the script executes.
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