Best php Websites to search the php content according to my knowledge

1) http://www.php.net/         

2)http://www.w3schools.com/php/default.asp

3)://www.developphp.com/list_php.php#Getting_Started_with_PHP_Programming

4)http://webcheatsheet.com/php/multidimensional_arrays.php

5)http://www.foreachphp.com/

6)http://www.w3resource.com/javascript/form/javascript-sample-registration-form-validation.php

7)http://www.w3resource.com/javascript/form/all-letters-field.php

8)http://www.phpknowhow.com/basics/

9)http://www.echoecho.com/htmlforms07.htm

10)http://programmers.stackexchange.com/questions/tagged/php