How-to articles, tricks, and solutions about PHP

PHP - Check if two arrays are equal

You can use the array_diff() function to check if two arrays are equal.

What is thread safe or non-thread safe in PHP?

In PHP, a thread-safe version of PHP is built with additional constructs to ensure that certain actions are atomic, which means that they are performed in their entirety without any other thread being able to interfere.

How to include a PHP variable inside a MySQL statement

To include a PHP variable inside a MySQL statement, you need to use prepared statements with bound parameters.

How can I enable the MySQLi extension in PHP 7?

To enable the MySQLi extension in PHP 7, you need to follow these steps.

Convert Base64 string to an image file?

To convert a Base64 string to an image file in PHP, you can use the base64_decode() function to decode the Base64 string and then save it as an image file using file_put_contents().

How to replace "if" statement with a ternary operator ( ? : )?

Here's how you can replace an "if" statement with a ternary operator in PHP.

How to enable cURL in PHP / XAMPP

To enable cURL in PHP, you need to make sure that the cURL extension is enabled in your PHP configuration.

Laravel Eloquent Sum of relation's column

You can use the sum method on an Eloquent relation to get the sum of a column's values.

PHP is not recognized as an internal or external command in command prompt

It sounds like you are trying to run the PHP command from the command prompt, but it is not recognized as a valid command.

What is the difference between single-quoted and double-quoted strings in PHP?

In PHP, single-quoted strings and double-quoted strings are very similar, with a few key differences.

Upgrading PHP in XAMPP for Windows?

To upgrade PHP in XAMPP for Windows, you will need to follow these steps.

How to locate the php.ini file (xampp)

The location of the php.ini file depends on how you installed XAMPP.

Efficiency of using foreach loops to clear a PHP array's values

Using a foreach loop to clear the values of an array in PHP is an efficient way to do so.

How can I get the MAC and the IP address of a connected client in PHP?

You can use the $_SERVER['REMOTE_ADDR'] variable in PHP to get the IP address of a connected client.

PHP Fatal Error Failed opening required File

A "PHP Fatal Error: Failed opening required file" error usually occurs when a PHP script tries to include a file that does not exist or cannot be accessed.

How to get last key in an array?

You can use the end() function to get the last element of an array in PHP.

What's the net::ERR_HTTP2_PROTOCOL_ERROR about?

net::ERR_HTTP2_PROTOCOL_ERROR is an error that occurs in the Google Chrome browser when there is an issue with the HTTP/2 protocol.

Truncate a string to first n characters of a string and add three dots if any characters are removed

To truncate a string to the first n characters and add three dots if any characters are removed in PHP, you can use the following function.

PHP Connection failed: SQLSTATE[HY000] [2002] Connection refused

The error message "SQLSTATE[HY000] [2002] Connection refused" typically indicates that the client was unable to establish a connection to the database server.

How to convert a string to JSON object in PHP

You can use the json_decode function in PHP to convert a JSON string into a PHP object.

Where is the php.ini file on a Linux/CentOS PC?

On a CentOS system, the php.ini file is usually located in the /etc directory.

Message: Trying to access array offset on value of type null

This error message is indicating that you are trying to access an array offset (i.e., an element of an array) but the value being accessed is null.

How can I remove part of a string in PHP?

There are several ways to remove a portion of a string in PHP.

List of All Locales and Their Short Codes?

Here is a list of all the locales and their corresponding short codes that are available in PHP.

break out of if and foreach

To break out of a loop in PHP, you can use the break statement.