如何用lasr在php中发生点分裂/爆炸字符串？

Question

朋友们，我在php中有字符串，如

1. 美国广播公司com
2. name.com
3. abc.xyz.name.org

现在我想把上面的域名(粗体文本)分割成

1. string1=abc string2=com
2. string1=abc string2=name.com
3. string1=abc.xyz string2=name.org

意思是我想分割用户名和域名。

所以请帮帮我。

Answer 1

你可以尝试：

$inputs = ['abc.com', 'abc.name.com', 'abc.xyz.name.org'];
foreach ($inputs as $input) {
    $parts  = explode('.', $input);
    $right = [array_pop($parts)];

    if (count($parts) > 1) {
      $right[] = array_pop($parts);
    }

    $output = [
      'left'  => implode('.', $parts),
      'right' => implode('.', $right),
    ];

    var_dump($output);
}

产出：

array (size=2)
  'left' => string 'abc' (length=3)
  'right' => string 'com' (length=3)
array (size=2)
  'left' => string 'abc' (length=3)
  'right' => string 'com.name' (length=8)
array (size=2)
  'left' => string 'abc.xyz' (length=7)
  'right' => string 'org.name' (length=8)

Answer 2

使用array_pop()函数后发生爆炸()：

$vars = explode('.', $string);

if ( count($vars) == 3 ) {
    $string2 = $vars[1] . '.' . $vars[2];
    $string1 = $vars[0];
}

if ( count($vars) == 2 ) {
    $string2 = $vars[1];
    $string1 = $vars[0];
}

// Or you may use
$vars = explode('.', $string);

if ( count($vars) == 3 ) {
    $string2 = $vars[1] . '.' . $vars[2];
    $string1 = $vars[0];
}

if ( count($vars) == 2 ) {
    $string2 = array_pop($vars);
    $string1 = array_pop($vars);
}

检查php.net中的弹出和爆炸

http://php.net/manual/en/function.array-pop.php

http://php.net/manual/en/function.explode.php

Answer 3

这应该能起作用。我试着使它尽可能详细。在线测试

<?php
function get_last_dot_occurence ($url ) {
    $fullArray = explode('.', $url);
    $newArray = "";
    switch (count($fullArray)) {
        case 0:
        break;

        case 1:
        $newArray = $url;
        break;

        case 2:
        $newArray = array("string1" => $fullArray[0], "string2" => $fullArray[1]);
        break;

        default:
        $string1 = "";
        for ($i=0; $i < count($fullArray)-2; $i++) { 
            $string1 .= $fullArray[$i];
            if($i != count($fullArray)-3)
                $string1 .= '.';
        }
        $string2 = $fullArray[count($fullArray)-2].'.'.$fullArray[count($fullArray)-1];
        $newArray = array("string1" => $string1, "string2" => $string2);
        break;
    }
    return $newArray;
}
print_r(get_last_dot_occurence("abc.com"));
print_r(get_last_dot_occurence("abc.name.com"));
print_r(get_last_dot_occurence("abc.xyz.name.org"));