-r 参数可以直接执行一段代码,不需要 ?php 例如 php -r 'phpinfo();' -R 参数可以对标准输入的每一行执行一段代码。会有两个变量,$argi 是行号, $argn 是当前行内容。 例如 ls | php -R 'echo "$argi/t$argn/n";' -B,-E 分别表示在整个处理输入的开始和
-r 参数可以直接执行一段代码,不需要 例如 php -r 'phpinfo();'
-R 参数可以对标准输入的每一行执行一段代码。会有两个变量,$argi 是行号, $argn 是当前行内容。
例如 ls | php -R 'echo "$argi/t$argn/n";'
-B,-E 分别表示在整个处理输入的开始和结束时执行的脚本。
比如 ls | php -R 'echo "$argi/t$argn/n";' -B 'echo "Begin/n";' -E 'echo "End/n";'
结果会是
Begin
1 a.txt
2 b.txt
3 c.txt
...
End
更多参数可以看 man php 。
php 用在脚本里有啥好处呢?php 带了很多 web 应用常用的函数。比如转义 html ,url 等等。用来处理这些数据会方便许多。

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