... Installation04 _57 96 65 ch01.qxd 12/30/04 8:09 PM Page 9Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Beginning PHP5, Apache, and MySQL ® Web Development 01 _57 96 65 ffirs.qxd ... Variables 655 The Ultimate Bait -and- Switch 655 Consistent and Valid Variable Names 656 Open a New Browser 656 “Headers Already Sent” Error 657 General Debugging Tips 658 Using echo 658 Divide and Conquer ... Installation04 _57 96 65 ch01.qxd 12/30/04 8:09 PM Page 15 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Beginning PHP5, Apache, and MySQL ® Web Development Elizabeth Naramore, Jason...