How can beginners troubleshoot errors like "pg_connect undefined" when working with PHP and PostgreSQL?

The error "pg_connect undefined" typically occurs when the PostgreSQL extension is not enabled in PHP. To solve this, you need to enable the extension in your PHP configuration file (php.ini) by uncommenting the line extension=pgsql.so (for Linux) or extension=php_pgsql.dll (for Windows). 

<?php
// Enable PostgreSQL extension
extension=pgsql
?>

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PHP PostgreSQL pg_connect troubleshooting errors

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