如何找出当前正在运行的PHP可执行文件? [英] How do I find out the currently running PHP executable?

问题描述

从PHP程序内部，我想知道执行它的二进制文件的位置.为此，Perl具有$^X.在PHP中是否有等同功能?

From inside a PHP program I want to know the location of the binary executing it. Perl has $^X for this purpose. Is there an equivalent in PHP?

因此，它可以使用自身执行子PHP进程(而不是硬编码路径或假定"php"正确).

This is so it can execute a child PHP process using itself (rather than hard code a path or assume "php" is correct).

更新

1. 我正在使用lighttpd + FastCGI，而不是Apache + mod_php.是的，有一个PHP二进制文件.
2. eval/include不是解决方案，因为我正在生成一个服务器，该服务器必须在请求之后才能运行.

我尝试过但不起作用的事情:

• $_SERVER['_']看起来像我在命令行中想要的，但实际上是从上次执行程序的外壳设置的环境变量中获取的.从Web服务器运行时，这是Web服务器二进制文件.
• which php将不起作用，因为不能保证PHP二进制文件与Web服务器的PATH中的二进制文件相同.

• $_SERVER['_'] looks like what I want from the command line but its actually from an environment variable set by the shell of the last executed program. When run from a web server this is the web server binary.
• which php will not work because the PHP binary is not guaranteed to be the same one as is in the web server's PATH.

谢谢.

推荐答案

PHP_BINDIR常量为您提供php二进制文件所在的目录

The PHP_BINDIR constant gives you the directory where the php binary is

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