PHP: How to get line from txt and dont repeat -


hello im using multithread class emails list

using file_get_contents("http://server.com/getemails.php");

this getemails.php:

index = file("index.dat"); $index = $index[0]; $f_contents = file("../susc/ar.txt"); $line = $f_contents[$index]; $data = $line;  file_put_contents("index.dat",$index +1);  echo $data;

it gets data "../susc/ar.txt" file has 100.000 lines : 

sampleuser@hotmail.com suscribeduser@hotmail.com exampleemail@hotmail.com ...

but, when run program multithreaded .. gives lot of repeated emails

like this:

[thread][t11] -> sampleuser@hotmail.com  [thread][t12] -> sampleuser@hotmail.com  [thread][t8] -> sampleuser@hotmail.com  [thread][t1] -> sampleuser@hotmail.com  [thread][t2] -> sampleuser@hotmail.com  [thread][t5] -> suscribeduser@hotmail.com  [thread][t3] -> suscribeduser@hotmail.com  [thread][t6] -> suscribeduser@hotmail.com  [thread][t7] -> suscribeduser@hotmail.com  [thread][t4] -> suscribeduser@hotmail.com  [thread][t14] -> exampleemail@hotmail.com  [thread][t9] -> exampleemail@hotmail.com  [thread][t10] -> exampleemail@hotmail.com

my question is, method can use line text file , dont repeat on next request


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