Replace text to number php - replace

Question

I need to replace a simple text with comma inside to number.
CSV File:
Test1
Test1, Test2
Test1, Test2, Test3
php code
$text = "Test1";
$text1 = "Test1, Test2";
$text1 = "Test1, Test2, Test3";
$search = array('$text','$text1','$text2');
$replace = array('10','11','12');
$result = str_replace($search, $replace, $file);
echo "$result";
the result is: "10","10, 11","10, 11, 12"
but I want to get "10","11","12".
This is the final script but on one of this im getting "10, 12"
$text1 = "Test1";
$text2 = "Test2";
$text3 = "Test3";
$text4 = "Test1, Test2, Test3";
$text5 = "Test1, Test2";
$text6 = "Test1, Test3";
$text7 = "Test2, Test3";
$text8 = "Blank";
array($text8,$text7,$text6,$text5,$text4,$text3,$text2,$text1);
array('10','11','12','13','14','15','16','17');

Answer 1

You probably don't want to have these string literals:
$search = array('$text','$text1','$text2');
Try
$search = array($text,$text1,$text2);
When you use single-quotes, variables are not parsed, so
$text1 = 'Hello';
$text2 = '$text1';
echo $text2; // $text1
Vs
$text1 = 'Hello';
$text2 = $text1;
echo $text2; // Hello
The result from:
Test1
Test1, Test2
Test1, Test2, Test3
Would be that each instance of Test1 is replaced with 10, and so on - so:
10
10, 11
10, 11, 12
Update
I see what you are trying to do. When you pass arrays into str_replace it processes them in order - so by the time it looks for Test1, Test2 you have already replaced Test1 with 10. Reverse the order to do what you want...
$text = "Test1";
$text1 = "Test1, Test2";
$text2 = "Test1, Test2, Test3";
$search = array($text2,$text1,$text); // reversed
$replace = array('12', '11', '10');// reversed
$result = str_replace($search, $replace, $file);
echo $result;