Fatal Error: Call to Undefined Function MySQL_Connect()

Fatal error: Uncaught Error: Call to undefined function mysql_connect()

mysql_* functions have been removed in PHP 7.

You probably have PHP 7 in XAMPP. You now have two alternatives: MySQLi and PDO.

PHP Fatal error : Call to undefined function mysql_connect()

To correct the error, you've basically got two choices, either

1) modify the code to remove references to the mysql extension (and use mysqli or PDO instead), or

2) install an older version of PHP (before PHP7) which supports the mysql extension

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FOLLOWUP:

If what you claim is true... that mysql_ functions are working under PHP7, then the most likely explanation for that is that someone installed a third party module/library that exports mysql_ functions.

I believe there was some work done to build such a library, to provide backwards compatiblity. The library would interact with the database using using the newer PHP mysqli_ functions, and provide (mostly) compatible mysql_ functions for legacy applications.

But that's not part of PHP7. That would be a third party add on.

Uncaught Error: Call to undefined function mysql_connect() - WordPress Setup

I found the solution, All you have to do is uncomment these lines in php.ini

extension=mysqli
extension=pdo_mysql

XAMPP - Fatal error: Call to undefined function mysql_connect()

First, Kindly ensure the MySQL service is running.

• Open XAMPP Control Panel
• Click on Start button corresponding to MySQL module.

Then, Try checking to see if the PHP MySQL extension module is being loaded:

<?php
    phpinfo();
?>

Run the above code/page and search for mysql.
If it's not there, add the following to the php.ini file:

extension=php_mysql.dll

Update: mysql_* functions have been removed in PHP 7. You probably have a php7 in XAMPP. Please use PDO or mysqli_connect("DB_HOST","DB_USER","DB_PWD") instead of mysql_connect().

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