PHP Editors

 I always use Adobe Dreamweaver for editing my php scripts but I can give you some of php editor you can used.

Cross Platform

• ActiveState Komodo Edit - Live PHP syntax checking, (s)ftp support, functions list and code hints
• Bluefish - Supports any protocol that is supported by GnomeVFS. (SSH...)
• Eclipse - PHPEclipse and PHP Development Tools projects. With additional plugins supports SVN, CVS, Database modelling, SSH/FTP access, Database Navigation, Trac integration, and others.
• Emacs - Advanced text editor. The nXhtml addon has special support for PHP (and other template languages).
• Geany - Syntax highlighting for HTML + PHP. Provides PHP function list.
• jEdit - Versatile Free/Open source editor. Supports SFTP and FTP.
• Netbeans IDE - A dedicated PHP coding environment and complete integration with web standards. Supports SFTP and FTP.
• Vim - provides PHP syntax highlighting.
• SciTE - fast, PHP syntax highlighting, compiler integration, powerful config via Lua API:LUA

Windows

• Alleycode HTML Editor — Freeware editor with syntax highlighting for both php and html.
• ConTEXT — Freeware editor with syntax highlighting.
• CodeLobster
• Crimson Editor — Lightweight editor. Supports FTP.
• Dev-PHP IDE
• HTML-Kit — Syntax highlighting, Supports FTP.
• Intype — Lightweight editor. Alpha version.
• Notepad2 — Simple editor with syntax highlighting
• Notepad++ — Supports FTP; syntax highlighting.
• PHPEdit — Free for student use, shareware, counts down from 30 days after install.
• Programmer's Notepad
• PSPad — Supports FTP; syntax highlighting.

Linux

• gedit
• gPHPEdit
• Joe's Own Editor
• Kwrite
• Kate - Supports any protocol that is supported by KDE. (FTP, SSH...)
• KDevelop - Supports any protocol that is supported by KDE. (FTP, SSH...)
• Quanta Plus - Supports any protocol that is supported by KDE. (FTP, SSH...)

Mac OS X

• Espresso - Support FTP, SFTP and Amazon S3; Trial available
• Coda - Support FTP, SFTP, SVN; Trial available
• TextMate
• BBEdit - Supports FTP
• Smultron
• TextWrangler - Supports SFTP and FTP

Commercial editors

• ActiveState Komodo IDE - Support for PHP syntax checking, debugging, trial available
• Adobe Dreamweaver - Supports SFTP and FTP
• Code Crusader IDE - Trial available
• Delphi - Only syntax highlighting; Trial available
• Delphi for PHP - Trial available
• Dreamweaver — Supports SFTP and FTP; Trial available.
• EditPlus - Supports SFTP and FTP; Trial available
• EmEditor
• JetBrains PhpStorm - professional PHP IDE with advanced editor, on-the-fly code analysis and other web development specific tools including FTP/SFTP syncronization.
• Microsoft Expression Web - Full PHP support with syntax highlighting, etc; Trial available
• PHPEdit - Supports SFTP and FTP
• phpDesigner - Supports SFTP and FTP, syntax highlighting for many programming languages; Trial available
• phpDesigner 7 - Supports SFTP and FTP, syntax highlighting for many programming languages; Trial available : http://www.mpsoftware.dk/
• NuSphere PhpED - Support for FTPS (TLS/SSL) and WebDAV/HTTPS (SSL) protocols, syntax highlighting for (PHP, XML, XHTML, HTML, CSS and JavaScript) languages; Trial available : http://www.nusphere.com/download.php.ide.htm
• skEdit
• SlickEdit
• TextMate - Trial available
• TextPad - Trial available
• Top PHP Studio - Supports FTP
• UltraEdit - Supports SFTP and FTP; Trial Available
• VS.Php for Visual Studio - PHP IDE for Visual Studio 2005, 2008 and 2010. Full intellisense and debugging support for native PHP applications.
• Zend Studio - Supports SFTP and FTP (Eclipse with Zend's Commercial Plug-in)
• PHPEd - Supports FTP, SFTP and WebDav
• WeBuilder
• Rapid PHP 2010 - PHP editor and PHP IDE

 Source: List of PHP editors - Wikipedia, the free encyclopedia