Question

这是代码

$description = explode("<li>", $rows['description']);
var_dump($description);
$find = 'annual';
$key = array_search($find, $description);
var_dump($key);
//echo $description[$key];

这是输出：

array(9) { 
    [0]=> string(4) "   " 
    [1]=> string(185) "Fair. No annual fee. No overlimit fee. No foreign transaction fee. Pay up to midnight ET online or by phone on your due date without a fee. Plus, paying late won't raise your APR.*" 
    [2]=> string(183) "Generous. 5% cash back at Home Improvement Stores & More on up to $1,500 in purchases from April through June 2014 when you sign up. And 1% cash back on all other purchases.*" 
    [3]=> string(64) "Human. 100% U.S.-based customer service available any time." 
    [4]=> string(188) "Looks out for you-since each Discover purchase is monitored. If it's unusual, you're alerted by e-mail, phone or text-and never responsible for unauthorized Discover card purchases.*" 
    [5]=> string(106) "Plus, free FICO® Credit Score on your monthly statement to help you stay on top of your credit.*" 
    [6]=> string(171) "0% Intro APR* on balance transfers for 18 months. Then the variable purchase APR applies, currently 10.99% - 22.99%. A fee of 3% applies for each balance transferred." 
    [7]=> string(112) "0% Intro APR* on purchases for 6 months. Then the variable purchase APR applies, currently 10.99% - 22.99%." 
    [8]=> string(119) "*Click "Apply" to see rates, rewards, and free FICO® Credit Score terms and other information.

" } 

bool(false)

变量$find正在输出中搜索"annual"，您可以看到数组键1中包含年份，但它返回 false 。

所以我不知道自己错过了什么或做错了什么。我已经尝试使用数组1的全部值来测试它，以确保在数组内搜索没有问题，但仍然是错误的。同样更改$find = "Generous"相同的结果...错误

Answer 1

您误解了array_search()的功能。以下一行：

公平。没有年费。没有超额费用。没有国外交易费。在线收费至午夜，或在您的截止日期通过电话付费，无需付费。另外，延迟付款不会提高你的APR。*

包含字符串annual，但不是字符串annual。换句话说，array_string()不会在字符串中搜索，而是尝试完全匹配。

要查找您要查找的结果，我会发现以下内容：

$matches = array_filter($description, function($el) {
    // evaluate the current element
    // return true if a string index is 
    // found for the target string
    return strpos($el, 'annual') !== false;
});

var_dump($matches);

迭代$description数组并返回包含任何包含字符串$filtered的元素的数组annual。或者，您可以使用foreach循环并将每个匹配的示例添加到$matches数组。

此处示例：https://eval.in/146145

希望这有帮助。

在字符串内搜索时，Array_search返回false

1 个答案: