Are PHP variables passed by value or by reference?

Is it possible to configure xampp to serve up a file outside of the htdocs directory? For instance, say I have a file located as follows: C:\projects\transitCalculator\trunk\TransitCalculator.php and my xampp files are normally served out from: C:\xam...

I am building an open search add-on for Firefox/IE and the image needs to be Base64 Encoded so how can I base 64 encode the favicon I have? I am only familiar with PHP

How do you debug PHP scripts? I am aware of basic debugging such as using the Error Reporting. The breakpoint debugging in PHPEclipse is also quite useful. What is the best (in terms of fast and easy) way to debug in phpStorm or any other IDE?

In our place we're split between using mysqli and PDO for stuff like prepared statements and transaction support. Some projects use one, some the other. There is little realistic likelihood of us ever moving to another RDBMS. I prefer PDO for the single ...

On the other end of the spectrum, I would be happy if I could install a wiki and share the login credentials between WordPress and the wiki. I hacked MediaWiki a while ago to share logins with another site (in ASP Classic) via session cookies, and it was ...

I have a directory structure like the following; script.php inc/include1.php inc/include2.php objects/object1.php objects/object2.php soap/soap.php Now, I use those objects in both script.php and /soap/soap.php, I could move them,...

Does anyone know of a good method for editing PDFs in PHP? Preferably open-source/zero-license cost methods. :) I am thinking along the lines of opening a PDF file, replacing text in the PDF and then writing out the modified version of the PDF? I have p...

What's the easiest way to profile a PHP script? I'd love tacking something on that shows me a dump of all function calls and how long they took but I'm also OK with putting something around specific functions. I tried experimenting with the microtime fu...

Is there available any tool for PHP which can be used to generate code for consuming a web service based on its WSDL? Something comparable to clicking "Add Web Reference" in Visual Studio or the Eclipse plugin which does the same thing for Java.

Even though I have a robust and fast computer (Pentium Dual Core 2.0 with 2Gb RAM), I'm always searching for lightweight software to have on it, so it runs fast even when many apps are up and running simultaneously. On the last few weeks I've been migrat...

Sorry for the basic question - I'm a .NET developer and don't have much experience with LAMP setups. I have a PHP site that will allow uploads to a specific folder. I have been told that this folder needs to be owned by the webserver user for the upload ...

Interfaces allow you to create code which defines the methods of classes that implement it. You cannot however add any code to those methods. Abstract classes allow you to do the same thing, along with adding code to the method. Now if you can achieve...

The following PHP code snippet uses GD to resize a browser-uploaded PNG to 128x128. It works great, except that the transparent areas in the original image are being replaced with a solid color- black in my case. Even though imagesavealpha is set, somet...

How do I convert the value of a PHP variable to string? I was looking for something better than concatenating with an empty string: $myText = $myVar . ''; Like the ToString() method in Java or .NET.

In the PHP manual, to show the syntax for functions with optional parameters, they use brackets around each set of dependent optional parameter. For example, for the date() function, the manual reads: string date ( string $format [, int $timestamp = time...

How do you pass $_POST values to a page using cURL?

I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: |. What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable?

How can I set the cookies in my PHP apps as HttpOnly cookies?

What is the RegEx pattern for DateTime (2008-09-01 12:35:45 ) ? I get this error: No ending delimiter '^' found Using: preg_match('(?n:^(?=\d)((?<day>31(?!(.0?[2469]|11))|30(?!.0?2)|29(?(.0?2)(?=.{3,4}(1[6-9]|[2-9]\d)(0[48]|[2468][048]|[1357...