eicar php testfile

<?php
$eicarTestString = 'X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*';
file_put_contents('eicar_test_file.txt', $eicarTestString);
echo "EICAR test file created.";