How-to articles, tricks, and solutions about PHP

This is a PHP error message that indicates your script is trying to use more memory than the amount specified in the PHP configuration.

To call a PHP script or function on a HTML button click, you can use JavaScript to send an HTTP request to the server when the button is clicked.

To disable registration of new users in Laravel, you can remove the registration routes from the web.php file in the routes folder.

You can use the addCData() method of the SimpleXMLElement class to add a CDATA section to an XML element.

In Laravel, you can use the back function to redirect the user to their previous page.

To update multiple records in the Eloquent ORM (Object-Relational Mapping) in Laravel, you can use the update() method on the query builder or on a model instance.

In PHP, you can use the built-in function "nl2br" to convert newline characters to HTML line breaks in emails.

In PHP with PDO, you can use the debugDumpParams() method on a prepared statement object to view the final SQL parametrized query.

There are several UML generators available for PHP, including:

To convert a SimpleXml object to a string in PHP, you can use the asXML() function.

In PHP, you can use the "array_reduce" function to flatten a multi-dimensional array.

You can use the dechex function in PHP to convert a random number to a hexadecimal value, and then use that value as a color code.

You can use the array_diff function in PHP to compare two arrays and check if the first array contains all of the values from the second array.

In PHP, you can use the echo function to output an HTML <a> tag with a "#id" value for the href attribute, which will link to the same page.

In PHP, you can use the scandir() function to get the names of all files in a directory.

To get the primary key of a table in PHP, you can use the SHOW KEYS SQL statement to retrieve information about the keys (including the primary key) of a table.

In PHP, you can use the $_SERVER superglobal array to access information about the current HTTP request.

To save an image from a URL using PHP and cURL, you can use the following function:

To resize an image on upload in PHP, you can use the getimagesize function to determine the dimensions of the image, then use the imagecreatetruecolor function to create a new image with the desired dimensions.

To get the selected text of a combo box (also known as a dropdown menu or select box) in PHP, you can use the following code:

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To get all the images from a folder in PHP, you can use the glob function.

To extract a property from an array of objects in PHP, you can use the array_column function.

In PHP, you can use the utf8_decode() function to decode a string that contains Unicode escape sequences.

To reverse the order of the items in a list when using a foreach loop in PHP, you can simply reverse the array using the array_reverse function before the loop.