本文給大家聊聊brew link更換php版本失敗問題，希望對需要的朋友有所幫助！

問題描述：

我透過 brew 安裝三種php版本

php 5.6 php 7.4 php 8.0

$ php -v

PHP 8.0.3 (cli) (built: Mar  4 2021 20:45:17) ( NTS ) Copyright (c) The PHP Group Zend Engine v4.0.3, Copyright (c) Zend Technologies     with Zend OPcache v8.0.3, Copyright (c), by Zend Technologies

停用8.0使用7.4

$ brew unlink php@8.0 && brew link php@7.4 Unlinking /usr/local/Cellar/php/8.0.3... 0 symlinks removed. Linking /usr/local/Cellar/php@7.4/7.4.16... 264 symlinks created. $ php -v

還是一樣版本

我開新的終端機也是一樣8.0.3

PHP 8.0.3 (cli) (built: Mar  4 2021 20:45:17) ( NTS ) Copyright (c) The PHP Group Zend Engine v4.0.3, Copyright (c) Zend Technologies     with Zend OPcache v8.0.3, Copyright (c), by Zend Technologies

中規中矩操作了

這是哪裏有少設置了？

分析解決：

你可以嘗試安裝一個PHP選擇器

brew update brew upgrade

參考文檔

https://github.com/shivammathur/homebrew-php

安裝指定php brew install shivammathur/php/php@7.3

鏈接php版本 brew link –overwrite –force php@7.3

如果出現報錯

Warning: Already linked: <Cellar Path> To relink:   brew unlink <formula> && brew link <formula>

執行

brew unlink php@7.3 brew link --overwrite --force php@7.3

重啟服務

apache brew services restart httpd nginx brew services restart nginx

安裝結果

To enable PHP in Apache add the following to httpd.conf and restart Apache:     LoadModule php7_module /usr/local/opt/php@7.0/lib/httpd/modules/libphp7.so     <FilesMatch .php$>         SetHandler application/x-httpd-php     </FilesMatch> Finally, check DirectoryIndex includes index.php     DirectoryIndex index.php index.html The php.ini and php-fpm.ini file can be found in:     /usr/local/etc/php/7.0/ php@7.0 is keg-only, which means it was not symlinked into /usr/local, because this is an alternate version of another formula. If you need to have php@7.0 first in your PATH run:   echo 'export PATH="/usr/local/opt/php@7.0/bin:$PATH"' >> ~/.zshrc   echo 'export PATH="/usr/local/opt/php@7.0/sbin:$PATH"' >> ~/.zshrc For compilers to find php@7.0 you may need to set:   export LDFLAGS="-L/usr/local/opt/php@7.0/lib"   export CPPFLAGS="-I/usr/local/opt/php@7.0/include" To have launchd start shivammathur/php/php@7.0 now and restart at login:   brew services start shivammathur/php/php@7.0 Or, if you don't want/need a background service you can just run:   php-fpm

歡迎討論！

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