如何从PHP调用bash函数？

Question

This is my workflow:

ubuntu$ cat test.sh
#!/bin/bash

function getNumber
{
    echo 1
}


ubuntu$ cat test.php
<?php

echo shell_exec("getNumber");



ubuntu$ source test.sh 
ubuntu$ getNumber 
1

ubuntu$ php test.php 
sh: 1: getNumber: not found

Is it possible to change a php script (or may be its call) the way, so it will print "1"? I am looking for a way to call a bash function from php.

I've tried some solutions from here: Is it possible to source a *.sh file using PHP CLI and access exported Env vars in the PHP script?

One of them was: ./test.sh && php -f test.php - but no luck.

Answer 1

Here's a function that does what you want. It loads spawns a bash process that sources the bash script, then runs the function.

It uses proc-open ( http://php.net/manual/en/function.proc-open.php )

<?php


$value = runBashFunction("test.sh", "getNumber");
var_dump($value);



function runBashFunction($bashfile, $bashfunction) {
    $descriptorspec = array(
         0 => array("pipe", "r"),    // stdin is a pipe that the child will read from
         1 => array("pipe", "w"),    // stdout is a pipe that the child will write to
         2 => array("pipe", "w") // stderr is a pipe too
    );

    $cwd = '.';
    $env = array();

    $process = proc_open('bash', $descriptorspec, $pipes, $cwd, $env);

    if (is_resource($process)) {
            fwrite($pipes[0], "source $bashfile
");
            fwrite($pipes[0], "$bashfunction
");
            fclose($pipes[0]);

            $output = stream_get_contents($pipes[1]);
            $error = stream_get_contents($pipes[2]);
            fclose($pipes[1]);
            fclose($pipes[2]);

            // It is important that you close any pipes before calling
            // proc_close in order to avoid a deadlock
            //

            $return_value = proc_close($process);
            //note, $error and $return_value are discarded
            return $output;
    }
    return null;
}
?>