PHP-从字符串获取子字符串 [英] PHP - Getting a sub-string from a string

问题描述

我有一个字符串

$line = "Name=johnGender=M";

如何制作一个名为$name的字符串，该字符串的值将存储为john. 如何提取字符串$ line中包含在=和G之间的子字符串.

How to make a string called $name that will have a value stored as john. How to extract a sub-string which is enclosed between = and G in the string $line.

或者从第一次遇到=时抓取一个包含4个字符的子字符串(这对我有用).

OR grab a sub-string of 4 characters from the first encounter of = (this will work for me).

如果$line=array("Name=john&Gender=M",Name=carl&Gender=M",);该怎么办?我想将它们放入数组$name中，这样$name=array("john", "carl");

What if $line=array("Name=john&Gender=M",Name=carl&Gender=M",); And I wanted to put them in an array $name So that $name=array("john", "carl");

推荐答案

我认为以下内容对您有用.

I guess the following would work for you.

$name = array();
foreach($line as $elem)
    array_push($name,substr(explode("=",$elem)[1],0,4));

因此您可以作为$name[0],$name[1],...

最好将输入语法设置为

$line = array("Name=john&Gender=M","Name=raja&Gender=M");
parse_str($line);

因此您可以使用内置功能parse_str().

So you can use the built-in function parse_str().

现在$Name[0]包含 john ，而$Name[1]包含 raja .

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