Combining Two Files

Question

Thanks in advance for helping me in this issue,

I have two files

file1.txt which contains:

adam
william
Joseph
Hind 
Raya

and file2.txt which contains:

Student
Teacher

What I want is to combine the two files in one file in this way, so that when the eof of file2.txt is reached, it re-reads it again and continue the

Combined.txt:

adam
Student
william
Teacher
Joseph
Student
Hind 
Teacher
Raya 
Student

Okay, have you tried anything yet? Maybe `file_put_contents('Combined.txt', file_get_contents('file1.txt') . file_get_contents('file2.txt'))`? — chris85, Jun 24 '16 at 02:58
It is possible, read each file with php, and use an loop to loop the function, and combine it using the .= function. — Ponilz, Jun 24 '16 at 03:08

scrowler · Accepted Answer · 2016-06-24T03:16:53.707

2

You can achieve this by looping the first text file's lines and inserting the alternate lines from text file #2 using a modulus on the key. The calculation is list #2 key = the remainder of list #1 key divided by the number of lines in list #2, i.e. $list2Key = $list1Key % $numberOfLinesInList2. More info on the modulus operator here.

$f1 = file('1.txt');
$f2 = file('2.txt');

$number_of_inserts = count($f2);

$output = array();
foreach ($f1 as $key => $line) {
    $output[] = $line;
    $output[] = $f2[$key % $number_of_inserts];
}

print_r($output);

This will work with any number of rows in the second text file.

edited Jun 24 '16 at 03:16

answered Jun 24 '16 at 03:08

scrowler

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Thank you very much for the solution @robbie, can you show how to write the array into the file merge.txt – Zufy Jun 24 '16 at 10:56
File put contents will do that for you – scrowler Jun 24 '16 at 11:03

Combining Two Files

1 Answers1