How to convert string into array in php

The content of this article is to share with you how to convert PHP strings into arrays. As a PHP programmer, the first reaction is to think of explode() and implode(). function.

con[1]=28&selt[1]=1&con[2]=29&selt[2]=4&con[3]=26&selt[3]=4
&con[4]=30&selt[4]=2&con[5]=4&selt[5]=1&con[6]=11&con[7]=12

The above is the string that needs to be converted into a PHP array; the PHP conversion code is provided below

<?php
$str = &#39;con[1]=28&selt[1]=1&con[2]=29&selt[2]=4&con[3]=26&selt[3]=4&con[4]=30&selt[4]=2&con[5]=4&selt[5]=1&con[6]=11&con[7]=12&#39;;
$arr = explode(&#39;&&#39;,$str);
$arr2 = array();
foreach($arr as $k=>$v){
        $arr = explode(&#39;=&#39;,$v);
        $arr2[$k] = $arr[1];
}
print_r($arr2);
?>
//输出
Array
(
    [0] => 28
    [1] => 1
    [2] => 29
    [3] => 4
    [4] => 26
    [5] => 4
    [6] => 30
    [7] => 2
    [8] => 4
    [9] => 1
    [10] => 11
    [11] => 12
)
//第二个
<?php
$str = &#39;con[1]=28&selt[1]=1&con[2]=29&selt[2]=4&con[3]=26&selt[3]=4&con[4]=30&selt[4]=2&con[5]=4&selt[5]=1&con[6]=11&con[7]=12&#39;;
$arr = explode(&#39;&&#39;,$str);
$arr2 = array();
foreach($arr as $k=>$v){
        $arr = explode(&#39;=&#39;,$v);
        $arr2[$arr[0]] = $arr[1];
}
print_r($arr2);
?>
//输出
Array
(
    [con[1]] => 28
    [selt[1]] => 1
    [con[2]] => 29
    [selt[2]] => 4
    [con[3]] => 26
    [selt[3]] => 4
    [con[4]] => 30
    [selt[4]] => 2
    [con[5]] => 4
    [selt[5]] => 1
    [con[6]] => 11
    [con[7]] => 12
)

The above PHP code can also solve the problem of converting strings into arrays. Let’s introduce the description of the parse_str() function so that you can have a good impression in your mind.

parse_str() 函数把查询字符串解析到变量中。
parse_str(string,array)
string:需要转换的字符串；
array:返回到一个数组中；
如果没有设置array的话就覆盖同名变量

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