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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.
PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.
The PHP 3 debugger protocol is line-based. Each line has a type, and several lines compose a message. Each message starts with a line of the type start and terminates with a line of the type end. PHP 3 may send lines for different messages simultaneously.
A line has this format:
Date in ISO 8601 format (yyyy-mm-dd)
Time including microseconds: hh:mm:uuuuuu
DNS name or IP address of the host where the script error was generated.
PID (process id) on host of the process with the PHP 3 script that generated this error.
Type of line. Tells the receiving program about what it should treat the following data as:
Table F-1. Debugger Line Types
| Name | Meaning |
|---|---|
| start | Tells the receiving program that a debugger message starts here. The contents of data will be the type of error message, listed below. |
| message | The PHP 3 error message. |
| location | File name and line number where the error occurred. The first location line will always contain the top-level location. data will contain file:line. There will always be a location line after message and after every function. |
| frames | Number of frames in the following stack dump. If there are four frames, expect information about four levels of called functions. If no "frames" line is given, the depth should be assumed to be 0 (the error occurred at top-level). |
| function | Name of function where the error occurred. Will be repeated once for every level in the function call stack. |
| end | Tells the receiving program that a debugger message ends here. |
Line data.
Table F-2. Debugger Error Types
| Debugger | PHP 3 Internal |
|---|---|
| warning | E_WARNING |
| error | E_ERROR |
| parse | E_PARSE |
| notice | E_NOTICE |
| core-error | E_CORE_ERROR |
| core-warning | E_CORE_WARNING |
| unknown | (any other) |
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PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.