PHP Version 4 File
General Information
| Title | PHP4 File Extension |
| Extension | .php4 |
| Full Form | PHP Version 4 File |
| File Type | Script/Source Code File |
| Developer | The PHP Group |
| MIME Type | text/x-php |
File Function
| Primary Function | Server-side scripting |
| Additional Functions | Web development, Data processing |
| Features | Embeddable in HTML, Script execution |
File Characteristics
| Quality | Depends on code |
| Supports Layers | N/A |
| Supports Transparency | N/A |
| Editable | Yes |
Use Cases
| Web Development | Yes |
| Server Scripting | Yes |
| Command-line Scripting | Yes |
Security and Practices
| Security Risks | Code injection, XSS |
| Best Practices | Validation, Sanitization |
Historical/Version Information
| Initial Release | 1999 |
| Discontinued Version | PHP 4.4.9 (2008) |
Associated Types
| Similar Extensions | .php, .phtml, .php3, .php5 |
Software Compatibility
| Software | Usage Policy | OS Compatibility |
|---|---|---|
 Zend Engine |
Free, Commercial | Windows, Mac, Linux, Unix |
 PHP 4.x |
Free | Windows, Mac, Linux, Unix |
 Apache HTTP Server |
Free | Windows, Mac, Linux, Unix |