php - 仅搜索和替换 wordpress 内容中的第一个 h2 标签

Question

function add_content_after_h2($content){
    if (is_single()) {
        $div = "This content is after first h2 tag";
        $content = preg_replace('/(<\/h2>)/i', '\1'.$div, $content);
    }

    return $content;
}

add_filter('the_content', 'add_content_after_h2');

使用此代码，内容正在考虑所有 H2 标签，但我只需要考虑第一个 h2 标签。

Answer 1

您需要像下面这样更改 preg_replace():-

<?php
$div = "This content is after first </h2> tag";
echo $content = preg_replace('/(h2 | <h2> | <\/h2>)/','', $div, 1); 

输出:- https://eval.in/715312