首先安装 libyaml
$ brew install libyaml
==> Downloading https://ghcr.io/v2/homebrew/core/libyaml/manifests/0.2.5
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==> Downloading https://ghcr.io/v2/homebrew/core/libyaml/blobs/sha256:a436da33a05f805258c5951a365dec4e8d70a908dbe5dacdeb6b2ecd0efd5024
==> Downloading from https://pkg-containers.githubusercontent.com/ghcr1/blobs/sha256:a436da33a05f805258c5951a365dec4e8d70a908dbe5dacdeb6b2ecd0efd5024?se=2021-11-05T09%3A00%3
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==> Pouring libyaml--0.2.5.arm64_monterey.bottle.tar.gz
/opt/homebrew/Cellar/libyaml/0.2.5: 10 files, 353KB记录一下这一步里的libyaml路径:
/opt/homebrew/Cellar/libyaml/0.2.5
然后安装 yaml
$ pecl install yaml
.......
Please provide the prefix of libyaml installation [autodetect] :
粘贴上一步得到的libyaml路径
安装完成，检查一下
$ php -m | grep yaml
yaml