string xdiff_string_diff ( string
$context= 3 [, bool
xdiff_string_diff — Make unified diff of two strings
First string with data. It acts as "old" data.
Second string with data. It acts as "new" data.
Indicates how many lines of context you want to include in the diff result.
Set this parameter to
TRUEif you want to minimalize the size of the result (can take a long time).