If you are running Snow Leopard or Lion and would like to upgrade to High Sierra, you need to install El Capitan first. Open the System Preferences menu and select Software Update. This version of OS X El Capitan is for users running OS X Snow Leopard or OS X Lion who would like to upgrade to macOS High Sierra. Go to the OS X 10.11 El Capitan download page to get it. But they forego the learning experience and, as most developers report, can become difficult to manage. Macs using OS X 10.7 through 10.10 must first upgrade to OS X 10.11 El Capitan before updating to macOS 10.15 Catalina.
I am aware of the web server software available for Mac OS X, notably MAMP. To create a local web server, all you need to do is configure Apache and install MySQL. It is the 12th release of Mac OS X (OS X) and only version to be named after OS X. Furthermore, Apache and PHP come packaged with Mac OS X. What is El Capitan OS El Capitan OS X is one of Apple’s versions of operating system. So most UNIX software installs easily on Mac OS X.
If you have installed Apache, PHP, and MySQL for Mac OS X Yosemite, read my post on Updating Apache, PHP, and MySQL for Mac OS X El Capitan. Note: This post is for new installations.
If you want to update your Mac to Monterey - either from Big Sur or an older version of. El Capitan does some fine-tuning to the Mac operating system, and it also has major updates to Safari.
After you complete this post, you should upgrade PHP on Mac OS X. As of 25 October 2021 the latest version of macOS will be Monterey. Apple’s latest version of OS X is called El Capitan (officially, it’s version 10.11). PHP Update: Mac OS X El Capitan comes pre-installed with PHP version 5.5 which has reached its end of life. Click on Install and then enter your admin password. Open the downloaded Mac OS X El Capitan software and preview the file in the Applications folder. MacOS Update: While these instructions still work, there are new posts for recent versions of macOS, the latest being Install Apache, PHP, and MySQL on macOS Mojave. Click on the download link that shows up, and enter the personal redemption code given to you.