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@ 2018-11-11T14:50:21Z

<?php
$array = ["\r\n \r\n 300518<\/departureDate>\r\n\t\t\t\t\t\t\t\t\t \r\n\t\t\t\t\t\t\t\t\t \r\n <\/availabilityDetails>\r\n \r\n HYD<\/cityAirport>\r\n <\/departureLocationInfo>\r\n \r\n DXB<\/cityAirport>\r\n <\/arrivalLocationInfo>\r\n <\/availabilityProductInfo>702<\/orderClassesByCabin><\/cabinOption>",44,"AUHOT3116"];

//should yield
$desired_output = "300518-departuredate-availabilityDetails-HYD-cityAirport-departureLocationInfo-DXB-cityAirport-arrivalLocationInfo-availabilityProductInfo-702-orderClassesByCabin-44-AUHOT3116";

$trim = ["\t","\r","\n","<\/",">"," ","cabinOption"];

foreach($array as &$value) {
    $value = str_replace($trim,"-",$value);
    $value = preg_replace('/[- ]{2,}/','-',$value);
    $value = trim($value,"- ");
}

$replaced_output = implode("-",$array);

var_dump($desired_output,$replaced_output);

Output for git.master, git.master_jit, rfc.property-hooks: string(175) "300518-departuredate-availabilityDetails-HYD-cityAirport-departureLocationInfo-DXB-cityAirport-arrivalLocationInfo-availabilityProductInfo-702-orderClassesByCabin-44-AUHOT3116" string(175) "300518-departureDate-availabilityDetails-HYD-cityAirport-departureLocationInfo-DXB-cityAirport-arrivalLocationInfo-availabilityProductInfo-702-orderClassesByCabin-44-AUHOT3116"

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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