How to save each array values in next line? I am having a requirement that, automating the contributed module configurations via hook_update. I have a text area, where i need to mention different URLs with one  URL/line. For reference look into the image:



To achieve this I have to use variable_set(); function. 
I tried something like below but not able to get all the values displayed. 

$test = array('abc/*','xyz/*','ijk/*');
variable_set('boost_testing', $test);


This code is setting only first row, it will not come to next row. 

So please suggest something I can do by using &lt;br&gt; or \n so that i can display each values next row. Any help will be appreciated.
You should pass paths as a string instead of array:

$test = "abc/*\nxyz/*\nijk/*\n";
variable_set('boost_testing', $test);


Remember to use double quotes for the $test string.