从 WordPress REST API JSON 响应中提取图像 url答案

【问题标题】：Extract Image url from WordPress REST API JSON response从 WordPress REST API JSON 响应中提取图像 url
【发布时间】：2021-03-19 20:14:22
【问题描述】：

我是 WordPress REST API 的新手，我不知道如何从 API (https://www.example.com/wp-json/wp/v2/posts) 响应的“内容”键中提取图像 URL，如下所示：

"content": {
"rendered": "\n<p>From munching on a casual pizza to romantic candlelit dinner in Kolkata with your better half, Valentine&#8217;s week is filled with all of these!</p>\n\n\n\n<p>The love week of February offers the perfect excuse to sample Kolkata&#8217;s very best restaurants with your other half.</p>\n\n\n\n<p>Find your dream date night in our Valentine&#8217;s Day special guide to the cutest restaurants in Kolkata.</p>\n\n\n\n<h2><i><center>Blue and Beyond</center></i></h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img src=\"https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond.png\" alt=\"\" class=\"wp-image-919\" srcset=\"https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond.png 540w, https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond-300x197.png 300w, https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond-150x99.png 150w\" sizes=\"(max-width: 540px) 100vw, 540px\" /><figcaption>Blue &amp; Beyond, New Market</figcaption></figure></div>\n\n\n\n<p>Situated in the New Market area, this place boasts of beautiful rooftop open-air seating. It also has an indoor seating</p>\n\n\n\n<p>You can expect a feel of colonial Kolkata with Stuart Hogg Market below."
}

我尝试了this 解决方案，但在我的情况下“featured_media”为 0。
已安装this 插件，但“better_featured_image”字段在所有帖子中显示为空。
This 是唯一可能解决问题的解决方案，但我不知道如何使用正则表达式提取图像 URL。

请帮助我使用正则表达式来提取 URL。或者如果有其他可能有帮助的方法，请在答案中提及。

【问题讨论】：

标签： json regex wordpress regex-lookarounds wordpress-rest-api

【解决方案1】：

你可以解码json字符串usginjson_decode()fucntion。然后你可以 preg_match 匹配 '/src="([^"]*)"/' 正则表达式来提取你的 src。检查下面的代码。

<?php 
$image = '{"content": {"rendered": "\n<p>From munching on a casual pizza to romantic candlelit dinner in Kolkata with your better half, Valentine&#8217;s week is filled with all of these!</p>\n\n\n\n<p>The love week of February offers the perfect excuse to sample Kolkata&#8217;s very best restaurants with your other half.</p>\n\n\n\n<p>Find your dream date night in our Valentine&#8217;s Day special guide to the cutest restaurants in Kolkata.</p>\n\n\n\n<h2><i><center>Blue and Beyond</center></i></h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img src=\"https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond.png\" alt=\"\" class=\"wp-image-919\" srcset=\"https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond.png 540w, https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond-300x197.png 300w, https://kolkatasutra.com/wp-content/uploads/2021/02/blue-n-beyond-150x99.png 150w\" sizes=\"(max-width: 540px) 100vw, 540px\" /><figcaption>Blue &amp; Beyond, New Market</figcaption></figure></div>\n\n\n\n<p>Situated in the New Market area, this place boasts of beautiful rooftop open-air seating. It also has an indoor seating</p>\n\n\n\n<p>You can expect a feel of colonial Kolkata with Stuart Hogg Market below."}}';
$image = json_decode($image, true);
preg_match('/src="([^"]*)"/',$image['content']['rendered'], $result); 
echo $result[1]; die;
?>

【讨论】：