我已经使用自制软件安装了 PHP PHP 7.2.0beta3。
phpinfo 表示启用了 webmp 支持，
但是当我尝试使用wrapper class 转换图像时，它会显示此错误：
未捕获的错误：调用 /Users/rakibtg/Projects/PHP-ImageToWebp/ImageToWebp.php:37 堆栈跟踪中的未定义函数 imagewebp() ...
如何在 macOS 中使用 homebrew php 安装环境启用 webp 支持？
【问题讨论】：
尝试以下方法：
brew reinstall php72 --with-webp
或者，如果失败，请尝试：
brew rm php72
brew install webp
brew install php72 --with-webp
通常，您可以通过以下方式找到任何给定软件包的可用选项：
brew options <PACKAGENAME>
例如：
brew options homebrew/php/php72
样本输出
--with-argon2
Include libargon2 password hashing support
--with-cgi
Enable building of the CGI executable (implies --without-fpm)
--with-debug
Compile with debugging symbols
--with-enchant
Build with enchant support
--with-gmp
Build with gmp support
--with-homebrew-curl
Include Curl support via Homebrew
--with-homebrew-libressl
Include LibreSSL instead of OpenSSL via Homebrew
--with-homebrew-libxml2
Include Libxml2 support via Homebrew
--with-homebrew-libxslt
Include LibXSLT support via Homebrew
--with-httpd
Enable building of shared Apache Handler module
--with-imap
Include IMAP extension
--with-libmysql
Include (old-style) libmysql support instead of mysqlnd
--with-mssql
Include MSSQL-DB support
--with-pdo-oci
Include Oracle databases (requries ORACLE_HOME be set)
--with-pear
Build with PEAR
--with-phpdbg
Enable building of the phpdbg SAPI executable
--with-postgresql
Build with postgresql support
--with-thread-safety
Build with thread safety
--with-webp
Build with webp support
--without-bz2
Build without bz2 support
--without-fpm
Disable building of the fpm SAPI executable
--without-ldap
Build without LDAP support
--without-legacy-mysql
Do not include the deprecated mysql_ functions
--without-libsodium
Build without libsodium support
--without-mysql
Remove MySQL/MariaDB support
--without-pcntl
Build without Process Control support
--without-unixodbc
Build without unixODBC support
--HEAD
Install HEAD version
【讨论】：