如何在PHP中将逗号分隔的键值字符串转换为关联数组

Question

I tried searching for a quick fix to converting a comma separated key=>value string to an associative array but couldn't find any. So i had to make a quick fix myself.

ANTECEDENT

I generated an array of some form elements using Jquery, to be sent via ajax. So I have something like:

var myarray = [];
var string1 = 'key1=>'+form['value1'].value; //and we have string2 and more
myarray.push(string1);

Then i sent "myarray" as data to the form handling script.

PROBLEM

Now i have an array to deal with in my php script. I have the following:

function($var,$data){
$string = $data('myarray'); //array created earlier with jquery
}

Which is the same as:

...
$string = array(0=>'key1=>value1',1=>'key2=>value2');
...

Meanwhle, what i need is:

...
$string = array('key1'=>'value1','key2'=>'value2');
...

SOLUTION

...
$string = $data('myarray');
$string1 = array();
foreach($string as $value){
    $split = explode('=>',$value);
    $string1[$split[0]]=$split[1];
}
...

Now i can access the value of each key as:

echo $string1['key1']; //gives value1

This solution can also be used in a situation where you have:

$string = 'key1=>value1,key2=>value2...';
$string = explode(',',$string); // same as $string = array('key1'=>'value1',...)
$string1 = array();
foreach($string as $value){
    $split = explode('=>',$value);
    $string1[$split[0]]=$split[1];
}

The solution is rather simpler than i expected but if you know a better way to make this kind of conversion, feel free to suggest.

Answer 1

You can add as key value pair in javascript. Then you don't need to do any operations, can access directly in PHP.

var myarray = {};
myarray['key1'] = form['value1'].value;

In PHP :

$arr = $data('myarray');
echo $arr['key1']

Answer 2

Use explode() to split up the string.

$string = 'key1=>value1,key2=>value2,key3=>value3';
$pairs = explode(',', $string);
$data = array();
foreach ($pairs as $pair) {
    list($key, $value) = explode('=>', $pair);
    $data[$key] = $value;
}
var_dump($data);

DEMO