Why do I get different configure commands for PHP?

If I use phpin开发者_StackOverflow社区fo() and then use php -i from the command line, I get different configure commands. Why would they be different?

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The ./configure is set to whatever was used when that PHP binary was built. While often the CLI (php -i) and the webserver module are built at the same time and thus have the same ./configure line, that doesn't have to be the case.

But of course php -r 'phpinfo();' and php -i will give the same results. (Or at least should...)

If you are using a pre-built package, then it's most likely that the configure options won't even work as-is, as the person who built PHP would have been using a different computer. (And your computer may not have all the required dependencies.)

Also, PHP uses different INI files, and that would affect the output of phpinfo() and php -i (although different INI files wouldn't change the ./configure line).