PHP & bash; Linux; Compile my own function

Question

Hi. I would like to make my own program but I have no idea how.. for example I want to make a typical 'Hello $user' program.

So..

├── hi
│   ├── hi.sh
│   ├── hi_to.sh

---

hi.sh

#!/bin/bash
~/hi/hi_to.sh $1 

---

hi_to.sh

#!/usr/bin/php
<?php
    echo "\nHellO ".$argv[1]."\n";
?>

---

Run it in terminal:

me:~/hi  
→ ./hi.sh User

HellO User

---

and my question is: how to compile all this files into one bash program?

Answer 1

You don't. If you want it in one script then you put it in one script in the first place.

Answer 2

I don't think we understand the question, because you could just call hi_to.sh like this:

./hi_to.sh user

And it would run like you want, getting rid of the first sh script.

Answer 3

1. Make sure the shebang line points to the correct php executable
2. You don't have to call the script hi.php, just call it hi
3. Make your script file executable ( e.g. via chmod u+x path/to/hi or chmod a+rx path/to/hi, see http://en.wikipedia.org/wiki/Chmod)
4. Make sure the file is within the search PATH for the user/accounts that are supposed to use your script (without typing the absolute path)

Answer 4

The only way I could see this 'combined' is by using a here-doc, which basically causes the first script to generate the second, then execute it:

#!/bin/sh

cat << EOF > /tmp/$$.php
<?php
    \$string="$1";
    echo "\nHellO ". \$string ."\n";
?>
EOF

/usr/bin/php -q /tmp/$$.php
retval=$?

rm /tmp/$$.php

exit $retval

In that example, $1 will expand to the first argument. I have escaped the other variables (that are related only to PHP), which PHP will expand when it runs. $$ in a shell script just expands to the PID of the script, the actual temporary file is going to be something like /tmp/1234.php. mktemp(1) is a much safer way to make a temporary file name that is more resistant to link attacks and collisions.

It also saves the exit status of PHP in retval , which is then returned when the script exits.

The resulting file will look like this (assuming the first argument to the shell script is foo):

<?php
   $string="foo";
   echo "\nHello " . $string . "\n";
?>

This is kind of an icky demonstration for how to use bash to write other scripts, but at least demonstrates that its possible. Its the only way I could think of to 'combine' (as you indicated) the two scripts that you posted.