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What is the function used to sum data from a MySQL table in PHP?

To sum data from a MySQL table in PHP, you can use the SQL SUM() function along with a query to retrieve the sum of a specific column. You can execute...

In what situations is it recommended to use the include() function in PHP development?

The include() function in PHP is recommended to be used when you want to include and run a specific file within another PHP file. This can be useful f...

What are common errors and warnings encountered when using the include() function in PHP?

Common errors and warnings encountered when using the include() function in PHP include file not found, file permissions issues, and possible security...

Why is it important to avoid output before using the header() function in PHP?

Output should be avoided before using the `header()` function in PHP because headers must be sent before any actual output is sent to the browser. If...

How can one determine which parameters are supported by the strftime function in PHP, and is there a way to check this through configuration files?

To determine which parameters are supported by the `strftime` function in PHP, you can refer to the official PHP documentation for the `strftime` func...