Speed - the fastest loading PHP editor & PHP IDE 
Sophisticated, fully customizable and familiar text editor 
Syntax highlighting for PHP, HTML, CSS, JavaScript, WML, XML and SQL 
UTF-8 and UTF-16 Unicode Support  
Easily navigate your code with Code Explorer  
Lookup PHP function parameters with Function Hints  
Lookup functions, variables and properties with Auto Complete  
Debug PHP code with xDebug debugger  
Validate PHP code with Syntax Check  
Realtime PHP Syntax Check as you type 
Built-in web server for easy PHP preview 
Integration with PHP, HTML and CSS documentation 
Save and open files directly from FTP/SFTP  
Project management and FTP/SFTP publishing 
SQL database connectivity (MySQL, PostgreSQL, Firebird, Interbase)  
Matching bracket highlighting 
Matching and missing HTML tag highlighting 
Search and Replace with Regular Expression Support 
Search and Replace in files 
Spell Checker for text in HTML code and TXT files 
Multi Item Clipboard 
Code snippet library and code templates  
Ready to use Code Templates 
Advanced HTML editing with Auto Complete, Inspector and other tools 
Advanced CSS editing with built-in CSS editor  
Advanced JavaScript editing with built-in JavaScript editor  
SVN Support via TortoiseSVN and shell menus from File Explorer 
Countless goodies (code collapse, line highlighting, text indentation etc.)