What should I do if php cannot upload large images?

Solution to the problem that php cannot upload large pictures: 1. Open php.ini; 2. Find post_max_size and set it to the value you need; 3. Confirm "file_uploads = on"; 4. Set a valid directory; 5. Set the maximum size of files allowed to be uploaded.

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

What should I do if php cannot upload large pictures?

php cannot upload large files. Perfect solution.

php.ini cannot upload large files. Perfect solution.

1. Open php.ini (no need to open the method Having said that, there are a lot of Baidu)

2. Find post_max_size

The maximum value for form submission. This item does not limit the size of a single uploaded file, but limits the submitted data of the entire form.

The default is 8m, set it to the value you need. It is recommended to set this parameter larger than upload_max_filesize

3. Find file uploads

Whether it is allowed to upload files through http switch, confirm file_uploads = on

4. Find upload_tmp_dir

and upload the file to the place where temporary files are stored on the server. If not specified, the system default temporary folder will be used

If the system error prompts "xxx temporary directory xxx", you need to set a valid directory for this directory. If there is no error, don't worry.

5. Find upload_max_filesize

Allow upload file size The maximum value, the default is 2m, set it to the value you need. It is recommended not to exceed the post_max_size value of this parameter, because it is controlled by the post_max_size value (even if upload_max_filesize is set to 1g, and post_max_size is only set to 2m, files larger than 2m will still be uploaded. Not up, because it is controlled by the post_max_size value)

6. If you want to upload files larger than 8m, you also need to set the following parameters:

Look for max_execution_time = 600; each The maximum time value (seconds) for the PHP page to run, the default is 30 seconds

max_input_time = 600; The maximum time required for each PHP page to receive data, the default is 60 seconds

memory_limit = 8m; Each time The maximum memory required for a php page, the default is 8m

nginx method perfect solution for uploading large files

1.client_body_buffer_size try to set it as large as possible, this is based on speed considerations, if it is because of the setting If it is too small, the uploaded file will always have to be written to the disk, and the speed will be too slow.

2.client_body_temp_path The path must have writable permissions. This is an obvious mistake. Just correct it

3.client_max_body_size sets the maximum value for uploaded files. This is based on security considerations. We believe that normal users will not or basically will not upload files that are too large.

Can be set to client_max_body_size 100m; or set this value according to your own business.

Example

nginx configuration.

The code is as follows:

cd /export/servers/nginx/conf/nginx.conf, add client_max_body_size to

location / {
root html;
index index.html index.htm;
client_max_body_size 1000m;
}

in the server section of this configuration file Field, no matter how restarted it doesn't work. Later, I found the sub-configuration file in the general configuration file:

The code is as follows:

sendfileon;
#tcp_nopush on;
#keepalive_timeout 0;
keepalive_timeout 65;
#gzip on;
include domains/*;
#include domains/chat.local;
#include domains/chat.erp.com;
#include domains/support.chat.com;
#include douains/chat.com;
server {
listen 80;
server_name localhost;

So I found the sub-configuration file and modified it in the sub-configuration file. The sub-configuration files are configured as follows:

The code is as follows:

server
{
listen 80;
server_name chat.erp.360buy.com;
# access_log /export/servers/nginx/logs/chat.erp.360buy.com;
location / {
proxy_pass;
client_max_body_size 1000m;
}
}

Restart with /export/servers/nginx/sbin/nginx -s reload, and the problem of limited upload file size is solved .

Share my solution process, I hope it will be helpful to everyone.

If it still cannot be solved, we need to see if it is a problem with the PHP form settings

This code is divided into two files, one is upload.html and the other is upload.php

upload.html

The code is as follows:

<form enctype=multipart/form-data action=upload.php method=post>
<input type=hidden name=max_file_size value=100000>
<input name=userfile type=file>
<input type=submit value=上传文件>
</form>

Among them,

Please note that

This is a tag. If we want to upload files, we must Specify multipart/form-data, otherwise the server will not know what to do.

It is worth noting that the hidden value field of the form option max_file_size in the file upload.html can limit the size of the uploaded file by setting its value.

The max_file_size value is just a suggestion for browsers, in fact it can be easily bypassed. So don't rely on this value to limit browser restrictions. In fact, the maximum upload file size in the PHP settings will not be invalid. But it's better to include max_file_size in the form, as it saves users the trouble of spending time waiting for a large file to be uploaded only to find out that the file is too big.

upload.php

The code is as follows:

$f=&$http_post_files['myfile'];
$dest_dir=’uploads’;//设定上传目录
$dest=$dest_dir.’/’.date(ymd)._.$f['name'];//设置文件名为日期加上文件名避免重复
$r=move_uploaded_file($f['tmp_name'],$dest);
chmod($dest, 0755);//设定上传的文件的属性

or

<?copy($_files[myfile][tmp_name],$_files[myfile][name]);?>

The contents of the $_files array in the above example are as follows. We assume that the name of the file upload field is userfile (the name can be named arbitrarily)

Recommended learning: "PHP Video Tutorial"

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