From version 4.2.0, PHP has got a new set of error codes that handles and reports all errors occuring during file upload, in the filearray object. The error is found in $_FILES['userfile']['error'].These error codes  and their explanations are given in this article.

Web services allow you to share data across many platforms and hardware configurations. You create a webservice in PHP, pass the webservice URl to an asp.net program, and it easily calls the webservice methods to get the data from your server. PHP has various methods to create and use webservices. XML-RPC, SOAP and REST are a few. In this article we will find out how we can create and use a webservice using SOAP. Basic database programming knowledge using PHP is assumed.

To check whether your php installation has GD configured in it, you can do either of the following methods :

At times we might want to give files for users to download. Also you wouldn't want to have the file storage location in a public access folder. To achieve these, you can store the file in an internal folder which is not accesible to public via a URL, and force the file to be downloaded using php header.

A regular expression is a pattern that is matched against a subject string from left to right. Most characters stand for themselves in a pattern, and match the corresponding characters in the subject.

Solution to the most common error when sending plain text emails;

Does your email display the n instead of parsing it ?

foreach loop

Foreach is a construct used to loop through arrays. There are mainly 2 types of usages :

for loop

A much neater and safer way to implement a loop structure is using the “for” statement. This isn’t much different from a while statement, in fact there is nothing you cannot achieve when using for statement that you cannot do with a while statement.

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do while loops

The “do...while” statement is similar to the “while” statement. The only difference between the two is that when using the “do...while” statement the block of statements is executed if and as long as a condition is true.

In programming ability to perform repetitive task is an important requirement. This can be accomplished using looping statements. A loop will continue to operate until a condition is achieved, or you choose to exit the loop. PHP includes several types of looping statements. This section focuses on the while loop.
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