How-to articles, tricks, and solutions about PHP

This error message typically occurs in PHP when you are trying to access a property of an object or variable that has not been initialized or does not exist.

In PHP, you can use the nl2br() function to convert line breaks (\n or \r\n) to <br /> tags.

This error message is indicating that a value is being assigned to a variable by reference, which is not allowed in PHP version 5.4 or later

You can increment a number by 2 in a PHP for loop by using the increment operator (++) and adding 2 to it on each iteration.

UTF-8 is a character encoding that supports a wide range of characters and is often used for handling multilingual text.

To run a PHP task asynchronously, you can use the pcntl_fork() function to create a new process that runs the task in parallel with the main script.

You can use the preg_match_all function in PHP to match all the words in a string and then use the substr function to get the first letter of each word.

Here's an example that demonstrates the difference between using attach() and sync() in Laravel Eloquent:

The file_get_contents() function in PHP is used to read the contents of a file into a string.

In Laravel, you can use the (:any?) wildcard to match any URI for a specific route.

You can use the IN operator to select rows where the value is in an array.

There could be a few reasons why the exec() function in PHP is not executing the command as expected.

To install Composer on a shared hosting, you can use the following steps:

In Laravel, you can use the getClientOriginalName() method to retrieve the original file name of an uploaded file.

In Laravel, you can use the Query Builder to delete records from a database table.

Here's an example of how the error might appear in a Codeigniter application:

You can use the DateTime class in PHP to find the time elapsed since a specific date time.

You can use dirname(dirname(__FILE__)) to go one level up in the directory structure when using __FILE__ (which returns the current file's path).

This error message indicates that the PHP script is trying to use the cURL library, which is not installed or enabled on the server.

An interface defines a set of methods that a class must implement, but does not provide any implementation for those methods.

You can use the assertEqualsCanonicalizing or assertEqualsIgnoringCase methods to compare two arrays and ignore the order of the elements.

To require a local package in Composer, you can use the "path" option in the "require" section of your project's composer.json file.

In Twig, you can use the exists function to check if a specific key of an array exists.

This message typically indicates that there is an issue with the authentication process.

In Guzzle 6, the json() method for parsing JSON responses has been removed.