PHP array (traversal order)

 

Author:Laruence

Address: http://www.laruence.com/2009/08/23/1065.html

Reprinted please indicate the source

I am often asked if the PHP array is accessed using foreach, is the traversal order fixed? In what order does it traverse?
For example

<?PHP$ Arr['Laruence '] = 'huixinchen';$ Arr['Yahoo '] = 2007;$ Arr['Baidu'] = 2008;Foreach($ Arr As $ Key=>$ Val){//What is the result?}
 

 

For example:

<?PHP$ Arr[2] = 'huixinchen';$ Arr[1] = 2007;$ Arr[0] = 2008;Foreach($ Arr As $ Key=>$ Val){//What is the result now?}
 

To fully understand this problem, I would like to first understand the internal implementation structure of the PHP array .........

Http://www.laruence.com/2009/08/23/1065.html