如何从php

Question

我有一个来自for循环的字符串数据，我想从字符串中删除特定字符和特殊字符。请在我的数据下面查找。

["\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"]

我尝试了php中的str_replace和trim函数，但是没有用。我想从下面的字符串中取出来。

300518-departuredate-availabilityDetails-HYD-cityAirport-departureLocationInfo-DXB-
cityAirport-arrivalLocationInfo-availabilityProductInfo-702-
orderClassesByCabin-44-AUHOT3116

只需从该字符串中删除所有\，r，n，t。谁能帮我。我试图没有得到结果。谢谢前进。

Answer 1

$cleanString = preg_replace('/\s+/', ' ', $yourString);

Answer 2

请查看下面的代码：

<?php
//the data seems to be actually an array
$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","<\/",">"," "]; //characters or substrings you want removed

foreach($array as &$value) {
    $value = str_replace($trim,"-",$value); //removing unwanted characters
    $value = preg_replace('/[- ]{2,}/','-',$value); //removing duplicates
    $value = trim($value,"- "); //removing trailing and ending unwanted characters
}

$replaced_output = implode("-",$array); //converting the initial array to string

echo "<pre>";
var_dump($desired_output,$replaced_output);

https://3v4l.org/3cdqO

请注意，期望的字符串和处理后的字符串并不相同，因为存在一个名为'cabinOption'的元素，该元素不符合删除条件，因此保持原样。

编辑：要使处理后的字符串与所需字符串相同，只需在$trim数组中添加要删除的任何字符串即可。

https://3v4l.org/uujfC

这可能不是最好的方法，但这只是针对此特定情况的可能解决方案。您应该考虑使用更通用的方法，正则表达式等。