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?
You could leverage the the presence of a / in all the keys
([^\s=/]+/[^\s=]+)=(.*?)(?=\h+[^\s=/]+/|$)
Explanation
( Capture group 1
[^\s=/]+ Match 0+ times any char except a whitespace = or //[^\s=]+ Then match / followed by the rest of the key) Close group 1= Match literally(.*?) Capture group 2, match any char except a newline as least as possible(?=\h+[^\s=/]+/|$) Assert a key like format containing a / (as used in group 1)See a Regex demo and a Php demo.
Example code
$re = '`([^\s=/]+/[^\s=]+)=(.*?)(?=\h+[^\s=/]+/|$)`';
$str = 'ALARM_ID/I4=1010001 ALARM_STATE/U4=eventcode ALARM_TEXT/A=WMR_MAP_EXPORT LOTS/A[1]=[ STEFANO ] ALARM_STATE/U1=1 WAFER/U4=1 VI_KLARF_MAP/A=/test/klarf.map KLARF_STEPID/A=StepID KLARF_DEVICEID/A=DeviceID KLARF_EQUIPMENTID/A=EquipmentID KLARF_SETUP_ID/A=SetupID RULE_ID/U4=1234 RULE_FORMULA_EXPRESSION/A=a < b && c > d RULE_FORMULA_TEXT/A=1 < 0 && 2 > 3 RULE_FORMULA_RESULT/A=FAIL TIMESTAMP/A=10-Nov-2020 09:10:11 99999999
';
preg_match_all($re, $str, $matches);
$result = array_combine($matches[1], $matches[2]);
print_r($result);
Output
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
)
If the keys should all start with word characters separated by an underscore, you can start the pattern using a repeating part [^\W_]+(?:_[^\W_]+)*
It will match word chars except an _, and then repeat matching _ followed by word chars except _ until it reaches a /
([^\W_]+(?:_[^\W_]+)*/[^\s=]*)=(.*?)(?=\h+[^\s=/]+/|$)