php - 查找带有各种 html 标签的字符串 PHP

Question

{
  "status" : "success",
  "prices" : [
    {
      "market_hash_name" : "AK-47 | Aquamarine Revenge (Battle-Scarred)",
      "price" : "9.77",
      "created_at" : 1463806291
    },
    {
      "market_hash_name" : "AK-47 | Aquamarine Revenge (Factory New)",
      "price" : "38.51",
      "created_at" : 1463822081
    },
    {
      "market_hash_name" : "AK-47 | Aquamarine Revenge (Field-Tested)",
      "price" : "17.8",
      "created_at" : 1463811694
    },
    {
      "market_hash_name" : "AK-47 | Aquamarine Revenge (Minimal Wear)",
      "price" : "26.0",
      "created_at" : 1463823062
    },
    {
      "market_hash_name" : "AK-47 | Aquamarine Revenge (Well-Worn)",
      "price" : "12.9",
      "created_at" : 1463832713
    },
    {
      "market_hash_name" : "AK-47 | Black Laminate (Battle-Scarred)",
      "price" : "6.36",
      "created_at" : 1463832092
    },
    {
      "market_hash_name" : "AK-47 | Black Laminate (Factory New)",
      "price" : "93.0",
      "created_at" : 1463800517
    },
    ]
}

我在尝试循环遍历 AK-47 的价格和 preg_match 时遇到以下问题 | Black Laminate (Factory New) 好像没找到

我使用了下面的代码

$data = json_decode($json,true);
$prices = $data['prices'];
echo '<pre>';
$item = 'AK-47 | Black Laminate (Factory New)';
foreach($prices as $items ){
    foreach($items as $key=>$value){
        if(preg_match("/".$item."/i",$value )){
            echo $key."<br>";
            echo $value."<br>";
        }
    }
}
echo '</pre>';

关于我做错了什么的任何想法

任何帮助将不胜感激

Answer 1

使用 preg_quote 函数对正则表达式模式中使用的字符串中的特殊字符进行转义:

$data = json_decode($json,true);
$prices = $data['prices'];

$item = 'AK-47 | Black Laminate (Factory New)';
foreach ($prices as $items ){
    foreach ($items as $key => $value){
        if (preg_match("/". preg_quote($item) ."/i", $value )) {
            echo $key."<br>";
            echo $value."<br>";
        }
    }
}

输出:

market_hash_name
AK-47 | Black Laminate (Factory New)

http://php.net/manual/en/function.preg-quote.php