How Can I Efficiently Convert Key=Value Strings to Associative Arrays in PHP?

Advanced String Parsing: Converting Key=Value Strings to Associative Arrays

In certain scenarios, you may encounter situations where you need to parse a string containing key-value pairs into an associative array. A common method of achieving this involves a tedious process of splitting the string by commas, trimming elements, and obtaining attribute values using further splits. However, a more efficient solution exists in PHP utilizing the power of regular expressions.

Consider the following string:

key=value, key2=value2

To transform this into the desired associative array format:

"key" => "value",
"key2" => "value2"

You can leverage regular expressions as follows:

$str = "key=value, key2=value2";
preg_match_all("/([^,= ]+)=([^,= ]+)/", $str, $r);
$result = array_combine($r[1], $r[2]);
var_dump($result);

This solution employs a regular expression to extract key-value pairs. The resulting array can then be converted into an associative array using array_combine. The final outcome is a structured associative array as intended.

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