WordPress 3 Plugin Development Essentials

Debugging

If you code, you will need to learn how to debug. PHP can be more difficult to debug than some languages because it lacks a built-in debugger, so you can't step through the code line by line and set break points. PHP also does not require that you declare your variables. The first time it comes across a variable, the variable is automatically typed and scoped. This behavior is both a blessing and a curse; it is guaranteed that you will have times when you will debug a script for hours, only to discover that the root cause was a misspelled variable name.

The following is a list of recommendations for more efficient PHP debugging:

• Clear your browser cache
• Update your php.ini file
• Check your syntax
• Configure your wp-config.php file
• Check values: ...