基于php中的分隔符拆分文件 - 这是最好用的？

I am trying to parse a file using php but I am not sure of the best way to do it. The file consists of stuff like:

我试图使用PHP解析文件,但我不知道最好的方法来做到这一点。该文件包含以下内容:

saturn+5 57 space+shuttle 34 gemini 12 mercury 2 soyuz+tm 1

What I'm trying to do is split it up and populate a hash map, so..

我想要做的是将它拆分并填充哈希映射,所以..

$inventory["saturn+5"] = "57";
$inventory["space+shuttle"] = "34";
and so on.

I don't know how to tackle this.

我不知道如何解决这个问题。

I am trying to write a bit of regex to process the file to separate out the fields but I'm not having much luck and was wondering if I should try using a different approach using split() or explode().

我正在尝试编写一些正则表达式来处理文件以分离出字段,但我没有太多运气,并且想知道我是否应该尝试使用split()或explode()来使用不同的方法。

4 个解决方案

#1

Here's my approach using regular expression.

这是我使用正则表达式的方法。

$data = 'saturn+5 57 space+shuttle 34 gemini 12 mercury 2 soyuz+tm 1';

$inventory = array();

preg_match_all('/(\S+) (\S+)/', $data, $matches);
foreach ($matches[1] as $index => $match) {
   $inventory[$match] = $matches[2][$index];
}
print_r($inventory);

Output

Array
(
    [saturn+5] => 57
    [space+shuttle] => 34
    [gemini] => 12
    [mercury] => 2
    [soyuz+tm] => 1
)

#2

my crude approach:

我原油的做法:

<?php
echo '<pre>';
$str="saturn+5 57 space+shuttle 34 gemini 12 mercury 2 soyuz+tm 1";

//break it on space
$e=explode(' ',$str);

//reindex array to start from 1
array_unshift($e, "phoney");
unset($e[0]);

print_r($e);
$inventory=array();
foreach ($e as $k=>$v){

//detects odd key   
if(($k+2)%2==1) {

$inventory[$v]= $e[$k+1];

    }

}

print_r($inventory);

demo: http://codepad.viper-7.com/PN6K8m

output:

Array
(
    [saturn+5] => 57
    [space+shuttle] => 34
    [gemini] => 12
    [mercury] => 2
    [soyuz+tm] => 1
)

#3

It's actually quite trivial with a regex:

对于正则表达式来说,这实际上是微不足道的:

preg_match_all("/  ([\w+]+)  \s  (\d+)  /x", $string, $m);
$assoc = array_combine($m[1], $m[2]);

You're just looking for a combination of alphanumeric characters \w and optional + signs, then a space, then a \d decimal.

你只是在寻找一个字母数字字符\ w和可选+符号的组合,然后是空格,然后是\ d十进制。

array_combine will give you the associative array.

array_combine将为您提供关联数组。

#4

If it's always in that order, this will work:

如果它始终按此顺序,这将工作:

<?

$foo = 'saturn+5 57 space+shuttle 34 gemini 12 mercury 2 soyuz+tm 1';
$foo_array = preg_split('/\s+/', $foo);

$hash = array();
for ($i = 0; $i < count($foo_array); $i++){
    $i % 2 ? null : $hash[$foo_array[$i]] = $foo_array[++$i];
}

print_r($hash);
?>

Output:

php foo.php
Array
(
    [saturn+5] => 57
    [space+shuttle] => 34
    [gemini] => 12
    [mercury] => 2
    [soyuz+tm] => 1
)

#1