How to check PHP supported methods

In the process of website building, we usually use PHP to develop dynamic web pages, but sometimes when we use PHP, we will encounter some problems, such as PHP not working properly, etc. At this time, we need to check whether PHP is supported in order to find the problem and solve it.

So how to check the methods supported by PHP? Here are some common methods.

1. View phpinfo

phpinfo is a very useful function in PHP that can display PHP-related information, including versions, extensions, configuration options, environment variables, etc. . By viewing phpinfo, you can quickly and easily confirm whether PHP is supported, the version number, and some configuration information.

Create a phpinfo.php file in the root directory of the website with the following content:

<?php phpinfo();
?>

Then enter the URL of the file in the browser to see the detailed page of PHP information .

If PHP-related information is displayed on the page, it means that PHP support is normal. Otherwise, it's possible that PHP is not enabled or configured incorrectly.

2. Execute php script

We can write a simple php script for testing to confirm whether PHP is supported.

Create a php_test.php file in the root directory of the website, with the following content:

<?php echo "Hello, PHP!";
?>

Then, enter the URL of the file in the browser, if "Hello, PHP!" is output , indicating that PHP support is normal. If there is no output, PHP may not be enabled or configured incorrectly.

3. Check the PHP configuration file

In the PHP configuration file, you can set some key parameters, such as error logs, memory limits, execution time, etc. If PHP support is not working properly, it is sometimes due to a problem with the configuration file.

You can find the location of the php.ini file through the following command:

php -i|grep php.ini

Open the php.ini file and check whether its parameter settings are the same as the requirements, such as whether error reporting and uploading files are turned on. Are the size limits reasonable, etc.?

4. Apache server support

If you are using PHP on the Apache server, you need to confirm whether you have installed and configured the modules with the Apache server, such as mod_php.

You can check whether it has been installed by running the following command:

dpkg -l | grep libapache2-mod-php

If it is not installed, you need to execute the following command to install it:

sudo apt-get install libapache2-mod-php

If this module is already installed, just You need to check whether it has been enabled and configured correctly.

The above are some common methods for checking PHP support. Corresponding adjustments or other measures may need to be made under different circumstances. Hope it can help you solve the problems you encounter.

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