从php运行shell脚本无法正常工作

Question

I'm running this shell script from within a php script at the command prompt.

<?php
$monitorDir = 'logs';
$script = "" .
        " inotifywait -mqr --format '%w %f %e' $monitorDir | " .
        " while read dir file event;" .
        " do" .
        "   if [ \"\$event\" == \"CLOSE_WRITE,CLOSE\" ];" .
        "   then" .
        "     echo finished writing \$file; ".
        "    fi;" .
        " done";

$proc = proc_open($script, $descriptors, $pipes);

When I run it I end up with output that looks like this:

sh: 1: [: MODIFY: unexpected operator
sh: 1: [: CLOSE_WRITE,CLOSE: unexpected operator
sh: 1: [: MODIFY: unexpected operator
sh: 1: [: OPEN: unexpected operator
sh: 1: [: MODIFY: unexpected operator

The strange thing is, when I echo out $script in the php and paste the resulting output in to the command shell it runs fine.

It looks like the problem is around if [ \"\$event\" ==.

Anyone see what I'm missing here?

Edit

Below is the exact output rendered by the php, Appologies for the formatting but I thought I'd leave it 'as is' to demonstrate what is being produced.

inotifywait -mqr --format '%w %f %e' logs | while read dir file event; do if [ "$event" == "CLOSE_WRITE,CLOSE" ]; then     echo finished writing $file;   fi; done

As I say, when pasted in to the console it runs fine, it just fails when opened with proc open.

Answer 1

Try escaping your $script with escapeshellcmd, e.g. proc_open(escapeshellcmd($script), ...).

Also, I think $\file should be \$file.

And then: your string will be much more readable - and you will spot errors easier - with Heredoc-syntax:

$script = <<<EOD

inotifywait -mqr --format '%w %f %e' $monitorDir | 
while read dir file event;
do
  if [ "\$event" == "CLOSE_WRITE,CLOSE" ];
  then
    echo finished writing \$file
   fi;
done
EOD;