php.ini environment configuration reference plan_PHP tutorial-PHP Tutorial-php.cn

php.ini environment configuration reference plan_PHP tutorial

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Release： 2016-07-13 17:08:23

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This article introduces the reference plan for php.ini environment configuration, which will be helpful to many friends. I know that many times, including me, php.ini is the default. Please refer to this article today to deal with it.

The full guide is actually an exaggeration. We will only discuss some configurations that will have an impact on our general development period. Leave other issues to the server managers - we are not network administrators, so we don’t need to Worrying about them should always add some content to their work, right?

代码如下	复制代码
extension_dir = “/path/to/php”

The directory where extension libraries (modules) are stored, which is the directory used by PHP to find dynamic extension modules. This is usually in the ext directory under the PHP installation directory (the file name may be different before PHP5). This directory is in the Windows version. PHP stores many .dll files such as php_gd2.dll, php_mysql.dll, etc. This is very important to us. Modify it according to the correct path. Generally write an absolute path, for example: d:php5ext

代码如下	复制代码
error_reporting = E_ALL & ~E_NOTICE

Set the level of error reporting. It is recommended to use E_ALL | E_STRICT, which includes all errors warned by code standards. This will help the code we write at the beginning to be standardized code, haha...

There is one more thing to note about bug reporting

代码如下	复制代码
display_errors = On

If set to On, the page will display error reports. If set to Off, you will not see error messages even if the level of error reporting is set. As a programmer, there is nothing more troublesome than knowing that there is a problem with the program but not knowing what the problem is.

代码如下	复制代码
max_execution_time = 30

The maximum time a single program script is allowed to occupy the server, in seconds, can avoid inadvertently writing an infinite loop or other programs that occupy the server for a long time and tire the server to death. If the value is set to 0, the running time is not limited.

代码如下	复制代码
memory_limit = 16M

The maximum amount of memory that a single program script can occupy, set to -1 to indicate no limit

代码如下	复制代码
max_input_time = -1

The maximum allowed time (seconds) for a single script to parse input data (POST, GET, upload), set to -1 to indicate no limit.

代码如下	复制代码
post_max_size = 8M

Maximum byte length allowed for POST data. This setting also affects file uploads. To upload large files, this value must be greater than the value of the upload_max_filesize directive.
If memory limit is enabled, this value should be less than the value of the memory_limit directive.

The code is as follows

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upload_max_filesize = 2M

代码如下	复制代码
upload_max_filesize = 2M

The size of the files allowed to be uploaded is two megabytes by default. If you need to upload files larger than 2M, you need to modify this. Of course, you need to modify the values of memory_limit and post_max_size in association.

The code is as follows

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upload_tmp_dir =

代码如下	复制代码
upload_tmp_dir =

The temporary directory where files are stored when uploading files. This directory must be writable by the PHP process. If not specified, PHP will use the system default temporary directory

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magic_quotes_gpc = On

代码如下	复制代码
magic_quotes_gpc = On

Whether to use automatic string escaping ( ' ” NULL ) for input GET/POST/Cookie data, generally set to On, but in the actual programming environment, do not rely on this setting. Generally, it is necessary to judge the data after Process, look at the code
……

The code is as follows

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代码如下

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if (!get_magic_quotes_gpc()) { //判断该设置是否为On
$lastname = addslashes($_POST['lastname']);//不为On手工转义
} else {
$lastname = $_POST['lastname'];//否则直接使用
}
……

register_globals = Off

if (!get_magic_quotes_gpc()) { //Determine whether the setting is On

$lastname = addslashes($_POST['lastname']);//Do not manually escape for On

} else {

$lastname = $_POST['lastname'];//Otherwise use

directly }

……

代码如下	复制代码
mbstring.language = “neutral”

register_globals = Off

I won’t go into details about this setting that has been deleted in PHP6. It must be set to Off! [mbstring] module This module is an extension for Chinese, Korean, Japanese and other double-byte characters. The following settings are usually turned off. If you want to enable these extensions, please remove the preceding ";". However, these settings are a bit too personalized. It is recommended not to set them. If you encounter Chinese interception or length measurement, just go to the Internet to find a program written by someone.

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mbstring.language = “neutral”

The default value "neutral" means neutral, equivalent to unknown, "zh-cn" or "Simplified Chinese" means simplified Chinese, "zh-tw" or "Traditional Chinese" means traditional Chinese
…
I don’t want to talk about the rest. If you really need it, let’s talk about it. You can contact me or ask in the group number posted on the top right of the homepage.

Enable extension module instance

extension=php_gd2.dll, enable the gd library extension, which is used to generate images

The code is as follows

代码如下

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extension=php_gd2.dll，启用gd库扩展，这个用于生成图片的

extension=php_mysql.dll

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extension=php_mysql.dll

true

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TechArticleThis article introduces the reference plan for php.ini environment configuration, which will be helpful to many friends. I know that includes I leave php.ini as the default most of the time. Please refer to this article today...