PHP Tricks help

Choose meaningful variable names and remember they're case-sensitive.
Use comments to remind you what your script does.
Remember that numbers don't require quotes, but strings (text) do.
You can use single or double quotes, but the outer pair must match.
Use a backslash to escape quotes of the same type inside a string.
To store related items together, use an array.
Use conditional statements, such as if and if... else, for decision making.
Simplify repetitive tasks with loops.
Use functions to perform preset tasks.
Display PHP output with echo or print.
Inspect the content of arrays with print_r().
With most error messages, work backward from the position indicated.
Keep smiling—and remember that PHP is not difficult.