John Davidson

Message:

I have a string like this:

"ALARM_ID/I4=1010001 ALARM_STATE/U4=eventcode ALARM_TEXT/A=WMR_MAP_EXPORT LOTS/A[1]=[ STEFANO ] ALARM_STATE/U1=1 WAFER/U4=1 VI_KLARF_MAP/A=/test/klarf.map KLARF_STEPID/A=StepID KLARF_DEVICEID/A=DeviceID KLARF_EQUIPMENTID/A=EquipmentID KLARF_SETUP_ID/A=SetupID RULE_ID/U4=1234 RULE_FORMULA_EXPRESSION/A=a < b && c > d RULE_FORMULA_TEXT/A=1 < 0 && 2 > 3 RULE_FORMULA_RESULT/A=FAIL TIMESTAMP/A=10-Nov-2020 09:10:11 99999999"

and my goal is to split into an associative array:

Array

(

    [ALARM_ID/I4] => 1010001

    [ALARM_STATE/U4] => eventcode

    [ALARM_TEXT/A] => WMR_MAP_EXPORT

    [LOTS/A[1]] => [ STEFANO ]

    [ALARM_STATE/U1] => 1

    [WAFER/U4] => 1

    [VI_KLARF_MAP/A] => /test/klarf.map

    [KLARF_STEPID/A] => StepID

    [KLARF_DEVICEID/A] => DeviceID

    [KLARF_EQUIPMENTID/A] => EquipmentID

    [KLARF_SETUP_ID/A] => SetupID

    [RULE_ID/U4] => 1234

    [RULE_FORMULA_EXPRESSION/A] => a < b && c > d

    [RULE_FORMULA_TEXT/A] => 1 < 0 && 2 > 3

    [RULE_FORMULA_RESULT/A] => FAIL

    [TIMESTAMP/A] => 10-Nov-2020 09:10:11 99999999

)

The unique (but maybe dirties) way that I found is through this script:

<?php

$msg = "ALARM_ID/I4=1010001 ALARM_STATE/U4=eventcode ALARM_TEXT/A=WMR_MAP_EXPORT LOTS/A[1]=[ STEFANO ] ALARM_STATE/U1=1 WAFER/U4=1 VI_KLARF_MAP/A=/test/klarf.map KLARF_STEPID/A=StepID KLARF_DEVICEID/A=DeviceID KLARF_EQUIPMENTID/A=EquipmentID KLARF_SETUP_ID/A=SetupID RULE_ID/U4=1234 RULE_FORMULA_EXPRESSION/A=a < b && c > d RULE_FORMULA_TEXT/A=1 < 0 && 2 > 3 RULE_FORMULA_RESULT/A=FAIL TIMESTAMP/A=10-Nov-2020 09:10:11 99999999";

$split = explode("=", $msg);

foreach($split as $k => $s) {

    $s = explode(" ", $s);

    $keys[] = array_pop($s);

    if ($s) $values[] = implode(" ", $s);

}

/*

 * this is needed if last parameter TIMESTAMP does not have ' ' (spaces) into value

 */

if (count($values) + 2 == count($keys)) array_push($values, array_pop($keys));

else                                    $values[ count($values) - 1 ] .= " " . array_pop($keys);

$params = array_combine($keys, $values);

print_r($params);

?>

Do you see a better way to split it maybe using regular expression or a different (elegant?) approach?

---

My Answer:
$string = "key1=value1&key2=value2&key3=value3";

// Initialize an empty array to store the key-value pairs
$data = [];

// Split the string by "&" to get individual key-value pairs
$pairs = explode("&", $string);

// Loop through each key-value pair and split it by "=" to get the key and value
foreach ($pairs as $pair) {
list($key, $value) = explode("=", $pair);
$data[$key] = $value;
}

// Print the associative array
print_r($data);