Question

我正在努力获取特定数组中元素的值。我希望在这种情况下获得“徽标”的价值，从下面的代码中返回“Logo Google 2013 Official.svg”。非常感谢任何帮助。

<html>
<head>
</head>
<body>

<html>

<body>
<h2>Search</h2>
<form method="post">
Search: <input type="text" name="q" value="google" />
<input type="submit" value="Submit">
</form>

<?php

if (isset($_POST['q'])) {
$search = $_POST['q'];


$url_2 = 
"http://en.wikipedia.org/w/api.php?   
action=query&prop=revisions&rvprop=content&format=json&titles=$search&rvsection=0&continue=";
$res_2 = file_get_contents($url_2);
$data_2 = json_decode($res_2);


?>

<h2>Search results for '<?php echo $search; ?>'</h2>
<ol>
<?php foreach ($data_2->query->pages as $r): 

?>

<li>

<?php foreach($r->revisions[0] as $a); 
echo $a; ?>

</li>
<?php endforeach; ?>
</ol>

<?php 
}
?>

</body>
</html>

结果$url_2为http://en.wikipedia.org/w/api.php?action=query&prop=revisions&rvprop=content&format=json&titles=google&rvsection=0&continue=

Answer 1

使用正则表达式捕获您想要的内容：

<ol>
<?php foreach ($data_2->query->pages as $r): ?>
    <?php foreach($r->revisions[0] as $a): ?>
    <li>
        <?php
            preg_match_all('/ logo += +([^|]+)/', $a, $result, PREG_PATTERN_ORDER);
            echo trim($result[0][0]); // prints 'Logo Google 2013 Official.svg'
        ?>
    </li>
    <?php endforeach; ?>
<?php endforeach; ?>
</ol>

通过数组获得价值

1 个答案: