我在wordpress的自定义模板页面中编写代码，我有以下形式，下面的PHP代码就在他旁边。它不工作，我尝试了不同的选项，但仍然没有。
<div class="su-tabs-pane su-clearfix">
<form style="padding: 5px 25px; background:#00ABEC;" action="" method="GET">
Nume:<input style="width:13.4%;" name="nume" type="text" value="" />
Specializare:<input style="width: 13.4%;" name="specializare" type="text" value="" />
Spital:<input style="width: 13.4%;" name="spital" type="text" value="" />
<select name="filter">
<option value="ALL">Toate judetele</option>
<option value="AB">Alba</option>
</select>
<input type="submit" value="Cauta" />
</form>
<?php
global $post;
if(isset($_GET["submit"])){
//variabile
$nume_searchq=$_GET["nume"];
$nume_searchq=strlower($nume_searchq);
$spec_searchq=$_GET["specializare"];
$spec_searchq=strlower($spec_search);
$instit_searchq=$_GET["spital"];
$instit_searchq=strlower($instit_searchq);
if($_GET['filter']=="ALL") {
$results=$wpdb->get_results("SELECT * FROM `wp_posts` WHERE LOWER(post_title) LIKE '%$nume_searchq%' OR LOWER(post_content) LIKE '%$spec_searchq%' OR LOWER(post_content) LIKE '%$instit_searchq%' ORDER by post_title");
}else if($_GET['filter']=="AB") {
$results=$wpdb->get_results("SELECT * FROM `wp_posts` WHERE LOWER(post_content) LIKE '%Alba%' OR LOWER(post_title) LIKE '%$nume_searchq%' OR LOWER(post_content) LIKE '%$spec_searchq%' OR LOWER(post_content) LIKE '%$instit_searchq%' ORDER by post_title");
}
$myposts = get_posts( $results);
foreach( $myposts as $post ){
setup_postdata($post);
echo '<li><a href="' . get_the_permalink() . '"> ' . get_the_title() . ' </a></li>';
}//end_foreach
wp_reset_postdata();
}//endIF_submit
?>
</div>
它实际上不显示任何东西，我按提交，什么也没发生。如果我有拼写问题或其他问题，请告诉我……谢谢!
您的php代码被包装在这个条件中:
if(isset($_GET["submit"])){...}
但是，您的表单没有具有该name属性(name="submit")的元素，因此该条件始终为false。
将提交按钮更改为:
<input type="submit" name="submit" value="Cauta" />
您可以使用以下代码
<?php
全球美元的帖子;if (isset($_GET["filter"]) &&!空($ _GET["filter")) {
//variabile
$nume_searchq = $_GET["nume"];
$nume_searchq = strtolower($nume_searchq);
$spec_searchq = $_GET["specializare"];
$spec_searchq = strtolower($spec_search);
$instit_searchq = $_GET["spital"];
$instit_searchq = strtolower($instit_searchq);
if ($_GET['filter'] == "ALL") {
$results = $wpdb->get_results("SELECT * FROM `wp_posts` WHERE LOWER(post_title) LIKE '%$nume_searchq%' OR LOWER(post_content) LIKE '%$spec_searchq%' OR LOWER(post_content) LIKE '%$instit_searchq%' ORDER by post_title");
} else if ($_GET['filter'] == "AB") {
$results = $wpdb->get_results("SELECT * FROM `wp_posts` WHERE LOWER(post_content) LIKE '%Alba%' OR LOWER(post_title) LIKE '%$nume_searchq%' OR LOWER(post_content) LIKE '%$spec_searchq%' OR LOWER(post_content) LIKE '%$instit_searchq%' ORDER by post_title");
}
$myposts = get_posts($results);
foreach ($myposts as $post) {
setup_postdata($post);
echo '<li><a href="' . get_the_permalink() . '"> ' . get_the_title() . ' </a></li>';
} //end_foreach
wp_reset_postdata();
}//endIF_submit祝辞;