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Featured MySQL

What Is the Host Parameter in mysqli_connect()?

Learn which host value to use in mysqli_connect(), how localhost differs from 127.0.0.1, and how to fix PHP and MySQL connection errors.

HeadsNTail October 17, 2026 1 min read

MySQL

Getting "Data truncated for column at row 1" on a CHAR(1) column? Find the value that doesn't fit, clean it up, and make MySQL reject bad data.

HeadsNTail October 17, 2026 8 min read

MySQL

Fix mysql_fetch_array, mysql_fetch_assoc, and mysql_num_rows resource errors in PHP. Find failed queries and migrate safely to MySQLi or PDO.

HeadsNTail October 15, 2026 2 min read

MySQL

Learn how to add a JOIN to an existing CodeIgniter SELECT query, with working CodeIgniter 3 and 4 examples, LEFT JOIN fixes, and SQL debugging tips.

HeadsNTail October 14, 2026 2 min read