Passing a PHP variable thru ssh in PHP script

Question

I'm quite new using ssh command thru a php script.

Here my script :

<?
$ark =123456-78

$Sark= substr("$ark", 0, -3); //123456
$stream = ssh2_exec($connection, 'grep $sark /var/log/transfer.log');
...
?>

When I put the value of $sark in clear, the ssh execution work fine but when I use the variable it's not working ( very long loading).

I also tried to declare my variable as

$sark= escapeshellarg('$sark');

I know that a php variable cannot be recognized in ssh command. I have not yet found any solution. Do you have any idea to solve this issue ?

Thank you Rflow

When using substitution for $sark - you should be using double quotes not single round the whole string (also try and ensure use same case for consistency). — Nigel Ren
– Nigel Ren, Commented Jul 21, 2017 at 16:15

Patrick Simard · Accepted Answer · 2017-07-21 16:20:06Z

1

Result:

<?php
$ark =123456-78;

$Sark= substr("$ark", 0, -3); //123456
$stream = ssh2_exec($connection, 'grep '.$Sark.' /var/log/transfer.log');
...
?>

answered Jul 21, 2017 at 16:20

Patrick Simard

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1 Comment

Thank you , you made my day ;) It works just fine :)