danzi638 于 2017.09.12 22:26 提问
- 请问PHP怎么把一段ip地址分解成一个数组
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如题：
比如说我输入0.0.0.0，然后会把0.0.0.0分解成4段数据都为0.求解下这个要怎么实现，谢谢。
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caozhy
2017.09.13 08:30
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- katelyn9 2017.09.13 15:09
$ip = "0.0.0.0";
$arr = explode(".",$ip);
$arr就是你要的数组
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- danzi638 2018.03.02 11:43
ip查询系统，满意可以赞同下。
<!DOCTYPE html>
ip查询系统
<?php
$conn = mysqli_connect('localhost:3308', 'root', '', 'myapp');
mysqli_set_charset($conn, "utf8");
if ($conn) {
$ip_result = null;
$ip = null;
$iparr = null;
$result = mysqli_query($conn, "SELECT * FROM ipsearch");
$data_count = mysqli_num_rows($result);
for ($i = 0; $i < $data_count; $i++) {
$result_arr = mysqli_fetch_assoc($result);
$startip = $result_arr['startip'];
$endip = $result_arr['endip'];
$startiparr = explode(".", $startip);
$endiparr = explode(".", $endip);
if (empty($_GET["ip"])) {
die("输入ip进行查询");
} else {
$ip = $_GET["ip"];
$iparr = explode(".", $ip);
if (count($iparr) == 4 && $iparr[0] <= 255 && $iparr[1] <= 255 && $iparr[2] <= 255 && $iparr[3] <= 255) {
for ($j = 0; $j < 4; $j++) {
$compare_one[$j] = intval($endiparr[$j]) - intval($startiparr[$j]);
}
for ($k = 0; $k < 4; $k++) {
$compare_two[$k] = intval($iparr[$k]) - intval($startiparr[$k]);
}
if ($compare_two[0] <= $compare_one[0]) {
if ($compare_two[1] <= $compare_one[1]) {
if ($compare_two[2] <= $compare_one[2]) {
if ($compare_two[3] <= $compare_one[3]) {
$ip_result = $startip;
$location = mysqli_query($conn, "SELECT * FROM ipsearch WHERE startip = '$ip_result'");
$locationarr = mysqli_fetch_assoc($location);
echo "您输入的ip地址为：" . $ip . '<br>';
echo '查询到您所在的位置为：' . $locationarr['location'];
break;
}
}
}
}
}else{
die('输入ip地址有错请重新输入');
break;
}
}
// echo "
$id$startip$endip$location";}
} else {
echo '连接失败';
}
?>