You are reinventng the wheel try `diff file1 file2`;
Jens Schmeiser wrote:
Dear list.
I want to compare two text files and print the differences. The text files contain the structure of a database, so they are very big (>6000 lines). The file looks like that:
TABLENAME#COLUMNNAME#DATATYPE#DATALENGTH#DATAPRECISION#NULLS ...
I only check if the datatype and nulls are different. If so, then the two lines of the files will be printed.
I tried to do that and it works excellent if there aren't many differences, but if there are many diffs, it takes time and time.
What I do now is to read the to files to an array and get the differences with array_diff
$array1=file('file1.txt'); $array2=file('file2.txt');
$result1 = array_diff($array1,$array2); $result2 = array_diff($array2,$array1);
After that I do the following: foreach ($result1 as $line1) { foreach ($result2 as $line2) { // compare the two lines and show the differences; continue; } }
Is there a better way to do that (and of course faster)?
Regards Jens
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