PHP的exec（）：运行bash脚本来配置环境，然后执行Python程序 [英] PHP exec(): Running bash script to configure environment then executing Python program

问题描述

Shell是tcsh的。 PHP v5.1.6。在redhat 5.7。 safe_mode设置为OFF。

Shell is tcsh. PHP v5.1.6. Redhat 5.7. Safe_mode is OFF.

使用EXEC从浏览器中运行PHP脚本：

Running php script from the browser using exec to:

1. 在bash脚本通过配置命令源环境


2. 运行Python程序依赖于由bash脚本设置环境（节目输出到标准输出）

该工程在命令行（$ SHELL = tcsh中）：

This works from the command line ($shell = tcsh):

/bin/bash -c "source /path-to-config-bash-script/config.sh; /bin/path-to-python /path-to-python-program/prog.py 2>&1"

这没有。 Python程序返回，表明环境设置不正确（无法找到某些库等）错误：

This does not. Python program returns an error indicating that the environment is not set up correctly (can't find certain libraries, etc.):

<?php
....
$cmd = "/bin/bash -c \"source /path-to-config-bash-script/config.sh; /bin/path-to-python /path-to-python-program/prog.py 2>&1\"";
$ret_val = exec( $cmd, $ret_arr, $err );
?>

四，检查权限和一切看起来OK。

Quadruple-checked permissions and everything looks OK.

谢谢！

推荐答案

四件事情要注意。

1 - PHP不能有杠杆的safe_mode 执行exec（）

1 - PHP must not have safe_mode on to leverage exec()

2 - shell脚本脚本需要有＃/斌/庆典将在文件的顶部声明，而不是传递到<$ C $！ C>执行exec（）

2 - The shell script script needs to have #!/bin/bashto be declared at the top of the file rather than being passed into the exec()

3 - Python脚本必须在脚本的顶部有＃的/ usr / bin中/ Python的，而不是试图通过执行exec（）语句。

3 - The python script must have #!/usr/bin/python at the top of the script rather than attempting to execute it through the exec() statement.

4 - 这是遍历所有目录找到脚本必须是可读

4 - All directories that are traversed to get to the script must be readable.

所以最后应该是这样的：

So the final should look like:

$cmd = "/path-to-config-bash-script/config.sh; /path/to-python/program/prog.py 2>&1";

这应该可以解决你所有的问题。

This should resolve all your issues.

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