How-to articles, tricks, and solutions about PHP

It sounds like you are having an issue with the isset() function in PHP not working properly when checking for a session variable.

PHP sessions can be shared across subdomains by setting the session cookie's domain to the top-level domain.

The error message "Call to undefined function curl_init()" typically indicates that the cURL extension for PHP is not installed or is not enabled.

There are a few things that can cause errors to not be logged when running PHP from the command line interface (CLI).

To create your own version of the Laravel DD() function, you can create a new function in your codebase and have it take in any number of arguments.

To send an HTTPS POST request using PHP, you can use the curl extension.

You can use the php_uname() function to get the operating system on which PHP is running.

In PHP, if you want to access a global variable inside a function, you need to use the "global" keyword.

You can use the "array_slice" function in PHP to limit an array to a specific number of items.

You can use the DateTime object in PHP to subtract one month from a date formatted with date('m-Y').

In a Smarty template file, you can assign an array to a variable using the assign function.

In PHP, you can add 30 days to a date by using the DateTime class and the modify() method.

Here is an example of how to submit an HTML table data via a form (using the POST method) using PHP:

In PHP, anonymous objects can be created using the new class syntax.

UTC (Coordinated Universal Time) is a standardized time that does not observe daylight saving time (DST).

In PHP, you can disable output buffering by calling the ob_end_flush() function or flush() function.

In PHP, the $_SESSION superglobal is used to store data that needs to persist across multiple page requests.

In PHP, you can create a new property for an object dynamically by using the magic method __set.

You can use the array_filter() function in PHP to search through an array and return only the elements that contain a certain string.

Here is an example of how you can use PHP to create a ZIP archive of all files in a directory and then prompt the user to download the generated ZIP file:

This error typically occurs when a variable is accessed as an object, but it has not been initialized or set to an object.

In Yii2, you can use the count() and groupBy() methods in the query builder to count and group the results of a query, respectively.

There are several reasons why a PHP header location redirect may not work:

In WooCommerce, you can display the sale price or regular price of a product using the following code snippet:

You can use the preg_replace function in PHP to remove any characters that do not match the specified pattern.