How-to articles, tricks, and solutions about PHP

To check if a string contains another string in PHP, you can use the strpos() function.

There are a few things you can try to troubleshoot this issue:

To add an ORDER BY clause to a query using CodeIgniter's Active Record class, you can use the order_by() method.

In Laravel's Eloquent ORM, you can use the inRandomOrder method to retrieve a random row from the database.

There are a few different ways to remove line breaks from a string in PHP. Here are two options.

The "Permission denied" error message is usually caused by a lack of write permissions for the user that is running the PHP script.

You can use array_walk_recursive() function in PHP to flatten a multidimensional array.

You can use the following HTML code to create a form that allows users to select and upload multiple files.

There are several ways to pass variables from one PHP page to another.

To stay on the same page after a form submission in PHP, you can use the following steps.

You can use the strpos function to find the position of the first occurrence of a substring in a string, and then use the substr function to extract the desired substring.

In Laravel, you can use the withErrors method to pass error messages to a view after a redirect.

To add an element to the end of an array with a key-value pair in PHP, you can use the array_push() function.

It is true that the MySQL extension is deprecated, and it is recommended to use either MySQLi or PDO instead.

To compare two DateTime objects in PHP 5.2.8, you can use the DateTime::diff() method, which returns a DateInterval object representing the difference between the two dates.

The file_get_contents() function in PHP is used to read a file and return its contents as a string.

To check if the $_POST superglobal variable exists in PHP, you can use the isset() function.

To print all the POST results when a form is submitted with PHP, you can use the print_r($_POST) function.

To reset the root password for MySQL on XAMPP, you can follow these steps.

In CodeIgniter, you can use the redirect() function to redirect the user's browser to a new page.

In PHP, using array and string offset access syntax with curly braces has been deprecated as of PHP 7.4.

This error is usually caused by a network issue, such as a lost connection or a network timeout.

To select unique values from a column in PHP, you can use the array_unique function.

To get the body of a POST request in PHP, you can use the file_get_contents function and pass it the special php://input stream.

To print an array to a file in PHP, you can use the file_put_contents() function, which writes a string to a file.