Unable to concat physical path of a file and file name in php -


here comes problem when concat following

string 1 = 'c:\xampp\htdocs\packiya\new_iiser\assets\uploads\banner'  string 2 = '\'  string 3 = 'file_name.ext'

i unable concat these 3 strings.

what problems facing? simple concatination should work: 

$concatenatedstring = $string1.$string2.$string3

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