Why Am I Getting the \'Call to Undefined Function mysql_connect()\' Error Even After Installing \'php5-mysql\'?

"Call to Undefined Function mysql_connect()": A Detailed Resolution

When encountering the error "Fatal error: Call to undefined function mysql_connect()," it can be alarming. This article will provide a step-by-step solution to resolve this issue.

Despite installing "php5-mysql" and restarting MySQL/Apache 2, the error persists. The issue may lie within the PHP version being used. For PHP7 users, the mysql_ functions have been deprecated and removed entirely. Therefore, updating the code to use PDO or mysqli_ functions is recommended.

However, if updating the code is not feasible, a workaround solution is available. By including the "fix_mysql.inc.php" file, the old mysql_ functions can be recreated with mysqli_() functions. This will allow the code to continue functioning without the need for immediate updates.

Steps to Use the Workaround:

1. Create the file "fix_mysql.inc.php" in the project directory.
2. Include the contents provided in the above-mentioned answer.
3. Include the file in the problematic script using the require() or include() function.

For instance:

<code class="php">require('fix_mysql.inc.php');</code>

This workaround will allow the code to run as expected even though the mysql_ functions are no longer supported. It is still highly recommended to migrate to the new PDO or mysqli_ functions to maintain code compatibility and security in the long term.

The above is the detailed content of Why Am I Getting the \'Call to Undefined Function mysql_connect()\' Error Even After Installing \'php5-mysql\'?. For more information, please follow other related articles on the PHP Chinese website!