Search elements inside string - php

Question

Let me explain what I want to do.
I need to connect to a device using SSH and execute some shell commands. I get the result of these commands (stream, using ssh2_fetch_stream) and save into a variable. This Works fine.
But what I need to know is how can I search by elements in a string?
Here a sample string:
$stringToSearch = "id=10 name=interfacename1 stringx=102040 stringy=50606040,id=20 name=interfacename2 stringx=872345 stringy=23875454,id=30 name=interfacename3 stringx=654389 stringy=34567865";
I need to obtain all the 'name=' results, like (SELECT name FROM stringToSearch;) and this would return:
____name____
interfacename1
interfacename2
interfacename3
I created a simple function to read this string.
<?php
function readString($stringToSearch, $start, $end) {
$result = '-1';
// I need to do a loop here, but how can I do it to read and return all elements between $start and $end?
if(strlen(strstr($stringToSearch, $start)) > 0)
{
$startsAt = strpos($stringToSearch, $start) + strlen($start);
$endsAt = strpos($stringToSearch, $end, $startsAt);
$result = substr($stringToSearch, $startsAt, $endsAt - $startsAt);
}
return $result;
}
$stringToSearch = 'id=10 name=interfacename1 stringx=102040 stringy=50606040,id=20 name=interfacename2 stringx=872345 stringy=23875454,id=30 name=interfacename3 stringx=654389 stringy=34567865';
$element = readString($stringToSearch, 'name=', ' '); // Will return only the 1st element
?>
But I can only retrieve the 1st element. How can I get all the elements in this string?

Answer 1

try with this solution :)
<?php
$stringToSearch = "id=10 name=interfacename1 stringx=102040 stringy=50606040,id=20 name=interfacename2 stringx=872345 stringy=23875454,id=30 name=interfacename3 stringx=654389 stringy=34567865";
var_dump(getName($stringToSearch));
function getName($stringToSearch) {
$pattern = '/name=([A-Z0-9]*)/i';
if(preg_match_all($pattern, $stringToSearch, $result) == 0){
return NULL;
}
return $result[1];
}
Enhancement (to get all values of desired parameter):
/**
* #param String $varName : the name of variable to get their values. ex: stringx, stringy
* #param String $stringToSearch : the string to search in
* #return Array if variable was found in $stringToSearch, NULL else
*/
function getName($varName, $stringToSearch) {
$pattern = '/' . $varName . '=([A-Z0-9]*)/i';
if(preg_match_all($pattern, $stringToSearch, $result) == 0){
return NULL;
}
return $result[1];
}

Answer 2

Using Halayem Anis's answer I was able to find all the elements in the string.
But I found other problem. If I have a string like that: name="foo bar" (with space at the middle).
To solve this problem I adapted the $pattern.
The result is:
//$varname = string to be searched like name=
//$stringToSearch = the original string
function getName($varName, $stringToSearch) {
$pattern = '/(?<=' . $varName . ')"(.*?)"/i'; // Changed this to get all between name=""
if(preg_match_all($pattern, $stringToSearch, $result) == 0){
return NULL;
}
return $result[1];
}