Create/maintain blocks of code
Use less number of tables
Height and Width in img tags
Initialize all variables
Comments in HTML and PHP
Check/Validate HTML
Separate files for CSS and Javascript also
Know your editor
Know your surrounding
Submitting an array to PHP from HTML
CSS: Table less design
Simple Design using table
Get X and Y coordinate of an element in a HTML document
Read sql data from a large file/csv file at very high speed
Encode data before saving data in table
Converting string to array and array to string in PHP: explode and implode
Dynamic Variables in PHP (Variable varaible)