如何在MAC中的php GD库中启用Webp支持

Question

我已经使用自制安装了PHP7.2.0beta3。phpinfo显示webmp支持已启用，

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但是，当我试图使用包装类转换图像时，它会显示以下错误：

未定义错误:调用/Users/rakibtg/Projects/PHP-ImageToWebp/ImageToWebp.php:37堆栈跟踪中未定义的函数imagewebp()。

我如何能够启用webp支持以及在macOS中使用国产php安装环境？

Answer 1

尝试以下几点：

brew reinstall php72 --with-webp

或者，如果做不到这一点，就试试：

brew rm php72
brew install webp
brew install php72 --with-webp

通常，您可以在下列条件下找到任何给定包的可用选项：

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