将带有两个分隔符的字符串转换为平面关联数组答案

【问题标题】：Convert string with two delimiters into flat associative array将带有两个分隔符的字符串转换为平面关联数组
【发布时间】：2017-06-14 05:17:54
【问题描述】：

我真的不知道正则表达式... 所以我被卡住了......谁能给我一个解释正则表达式本身的解决方案？

这是我的代码：

$str = "id:521082299088|name:JOHNSON GREIG DENOIA|mounth:JAN17|amount:170027|admin:2500|billqty:1|metre:R1/900|usage:00010261-00010550|reffno:0BKP21851AF3EC2E0D4F56997EA19DFA|charge:170377|balace:1935";
$pregsplit = preg_split("/[\s|]+/",$string2);

输出：

Array
(
    [0] => id:521082299088
    [1] => name:JOHNSON
    [2] => GREIG
    [3] => DENOIA
    [4] => mounth:JAN17
    [5] => amount:170027
    [6] => admin:2500
    [7] => billqty:1
    [8] => metre:R1/900
    [9] => usage:00010261-00010550
    [10] => reffno:0BKP21851AF3EC2E0D4F56997EA19DFA
    [11] => charge:170377
    [12] => balance:1935
)

我想要这样的输出：

Array
(
    "id" => 521082299088
    "name" => "JOHNSON GREIG DENOIA"
    "mount" => "JAN17"
    "amount" => 170027
    "admin" => 2500
    "billqty" => 1
    "metre" => "R1/900"
    "usage" => "00010261-00010550"
    "reffno" => "0BKP21851AF3EC2E0D4F56997EA19DFA"
    "charge" => 170377
    "balance" => 1935
)

【问题讨论】：

标签： php regex explode

【解决方案1】：

1) 使用带有特定正则表达式模式的preg_match_all 函数的解决方案：

$str = "id:521082299088|name:JOHNSON GREIG DENOIA|mounth:JAN17|amount:170027|admin:2500|billqty:1|metre:R1/900|usage:00010261-00010550|reffno:0BKP21851AF3EC2E0D4F56997EA19DFA|charge:170377|balace:1935";

preg_match_all("/(\w+):([^|]+)/", $str, $matches, PREG_SET_ORDER);
$result = [];
foreach ($matches as $items) {
    $result[$items[1]] = $items[2];
}
// $items[1] contains a "parameter" name captured by the first capturing group (\w+)
// $items[2] contains a "parameter" value captured by the second capturing group ([^|]+)

print_r($result);

输出：

Array
(
    [id] => 521082299088
    [name] => JOHNSON GREIG DENOIA
    [mounth] => JAN17
    [amount] => 170027
    [admin] => 2500
    [billqty] => 1
    [metre] => R1/900
    [usage] => 00010261-00010550
    [reffno] => 0BKP21851AF3EC2E0D4F56997EA19DFA
    [charge] => 170377
    [balace] => 1935
)

(\w+) - 匹配后跟:的所有字母数字字符

([^|]+) - 匹配除分隔符| 之外的所有字符

http://php.net/manual/en/function.preg-match-all.php

2) 除了第一种方法 - 使用 array_combine 函数（组合来自两个捕获组的所有相应值）：

preg_match_all("/(\w+):([^|]+)/", $str, $matches);
$result = array_combine($matches[1], $matches[2]);
// will give the same result

3) 第三种替代方法是使用explode() 函数：

$result = [];
foreach (explode("|", $str) as $items) {
    $pair = explode(":", $items);
    $result[$pair[0]] = $pair[1];
}

【讨论】：

你能给我解释一下那个正则表达式吗？每个字符
@KurniawanNanda，添加解释
您的表达中似乎不需要积极的前瞻。
@KurniawanNanda 我建议你搜索在线实时正则表达式编辑工具来练习它。这些将有助于更好地理解正则表达式。例如，我真的会推荐 regexr.com。
@Niitaku，好的，已删除

【解决方案2】：

这种方法是一种替代方法。

您可以使用 PHP 的 explode() 函数分离字符串并从中创建一个数组。然后您可以使用strpos() 和substr() 函数分离'key:value' 结构。

// input string
$str = "id:521082299088|name:JOHNSON GREIG DENOIA|mounth:JAN17|amount:170027|admin:2500|billqty:1|metre:R1/900|usage:00010261-00010550|reffno:0BKP21851AF3EC2E0D4F56997EA19DFA|charge:170377|balace:1935";

// make an array out of the string, split elements on each pipe character ('|')
$arr = explode('|', $str);

// create an output array to keep the results
$output = [];

// process the array
foreach ($arr as $item) {
    // get delimiter
    $separatorPos = strpos($item, ':');
    // take the key part (The part before the ':')
    $key = substr($item, 0, $separatorPos);
    // take the value part (The part after the ':')
    $value = substr($item, $separatorPos);
    // push it into the output array
    $output[$key] = $value;
}

// dump the output array
var_export($output);

输出数组的转储如下所示；

[
    'id'      => ':521082299088',
    'name'    => ':JOHNSON GREIG DENOIA',
    'mounth'  => ':JAN17',
    'amount'  => ':170027',
    'admin'   => ':2500',
    'billqty' => ':1',
    'metre'   => ':R1/900',
    'usage'   => ':00010261-00010550',
    'reffno'  => ':0BKP21851AF3EC2E0D4F56997EA19DFA',
    'charge'  => ':170377',
    'balace'  => ':1935',
]

【讨论】：

【解决方案3】：

如果您无法编写正则表达式。这里是使用explode() 方法的简单解决方案。explode() 函数将字符串分解为数组。

<?php
$str = "id:521082299088|name:JOHNSON GREIG DENOIA|mounth:JAN17|amount:170027|admin:2500|billqty:1|metre:R1/900|usage:00010261-00010550|reffno:0BKP21851AF3EC2E0D4F56997EA19DFA|charge:170377|balace:1935";

$array = explode('|',$str);
foreach($array as $key=>$value){
 $data = explode(':',$value);
 $final[$data[0]] = $data[1];

}
print_r($final);

?>

输出：

Array
(
    [id] => 521082299088
    [name] => JOHNSON GREIG DENOIA
    [mounth] => JAN17
    [amount] => 170027
    [admin] => 2500
    [billqty] => 1
    [metre] => R1/900
    [usage] => 00010261-00010550
    [reffno] => 0BKP21851AF3EC2E0D4F56997EA19DFA
    [charge] => 170377
    [balace] => 1935
)

要了解有关explode() 的更多信息，请阅读文档http://php.net/manual/en/function.explode.php

【讨论】：

【解决方案4】：

一种有趣的方式（仅当您的字符串不包含= 或& 时）：将管道转换为和号，将冒号转换为等号，然后将其解析为带有parse_str 的URL 查询：

$str = "id:521082299088|name:JOHNSON GREIG DENOIA|mounth:JAN17|amount:170027|admin:2500|billqty:1|metre:R1/900|usage:00010261-00010550|reffno:0BKP21851AF3EC2E0D4F56997EA19DFA|charge:170377|balace:1935";

parse_str(strtr($str, ':|', '=&'), $result);

print_r($result);

demo

【讨论】：