<?php
/*比较两个txt文件，格式如下，分别取出a.txt有的b.txt没有的，b.txt有的a.txt没有的及两个都有的
* a.txt:
* A
* B
* C
* D
* b.txt
* A
* B
* M
* N
* result:
* only_a.txt
* C
* D
* only_b.txt
* M
* N
* public_a_b.txt
* A
* B
*/
$curr_file_name = dirname(__FILE__);
if (file_exists($curr_file_name . '\a.txt')) {
$array_a = explode("\r\n", trim(file_get_contents('a.txt')));
}
if (file_exists($curr_file_name . '\b.txt')) {
$array_b = explode("\r\n", trim(file_get_contents('b.txt')));
}
if($array_a) {
foreach ($array_a as $value) {
if (!in_array($value, $array_b)) {
$only_a[] = $value;
}
}
file_put_contents("only_a.txt", implode("\r\n", $only_a));
}
if($array_b) {
$public_a_b = array();
foreach ($array_b as $value) {
if (!in_array($value, $array_a)) {
$only_b[] = $value;
} else {
$public_a_b[] = $value;
}
}
file_put_contents("only_b.txt", implode("\r\n", $only_b));
file_put_contents("public_a_b.txt", implode("\r\n", $public_a_b));
}
?>
