我正在编写一个 PHP 函数来搜索 Wordpress 模板文件中的一组邮政编码数组。为什么我的函数 return 没有值？

Question

该函数现在的目的是遍历多个逗号分隔的邮政编码列表（zip_codes_serviced 的高级自定义字段）并将其与特定的邮政编码（33606 用于测试目的）匹配。如果匹配，该函数应打印与该邮政编码关联的城市和州字段。在这种情况下，佛罗里达州坦帕市。见下面的功能：

function zip_search($userZip){
    $posts = get_posts(array(
        'posts_per_page'    => -1,
        'post_type'         => 'Location'
    ));


    if( $posts ): 
        foreach( $posts as $post ): 
            $zipField=get_field('zip_codes_serviced');
            //echo $zipField;
            $zipString = $zipField . ', ';
            //echo $zipArray;

            $array = explode(', ' , $zipString); //split string into array seperated by ', '

            foreach($array as $value) //loop over values
            {
                $cityField=get_field('city');
                $stateField=get_field('state');

                if($value==$userZip){

                return ($cityField . '<br>' . $stateField);  
            }   
            }       
        endforeach;
        wp_reset_postdata(); 
    endif; 
}

然后我这样调用函数：

zip_search(33606);

我也这样试过：

function zip_search(){
        $posts = get_posts(array(
            'posts_per_page'    => -1,
            'post_type'         => 'Location'
        ));
        //Set user zip to 33606 for testing purposes
        $userZip=33606;

        if( $posts ): 
            foreach( $posts as $post ): 
                $zipField=get_field('zip_codes_serviced');
                //echo $zipField;
                $zipString = $zipField . ', ';
                //echo $zipArray;

                $array = explode(', ' , $zipString); //split string into array seperated by ', '

                foreach($array as $value) //loop over values
                {
                    $cityField=get_field('city');
                    $stateField=get_field('state');
                    //echo $value. '<br>';            
                    if($value==$userZip){

                    echo ($cityField . '<br>' . $stateField); //print 
                }   
                }       
            endforeach;
            wp_reset_postdata(); 
        endif; 
    }

然后这样调用：

zip_search();

这不应该在页面上打印出城市和州字段吗？当我将逻辑放在函数之外时，它可以工作，但我无法让它在函数内工作。有人有什么建议吗？

我让它工作的唯一方法是完全在一个函数之外——创建一个文件 zip-search.php，然后在我想要它显示的页面上插入 <?php include("phone-display.php"); ?>，我很漂亮确定这是一个 hack； zip-search.php 如下所示：

$posts = get_posts(array(
    'posts_per_page'    => -1,
    'post_type'         => 'Location'
));
//Set user zip to 33606 for testing purposes
$userZip=33606;
if( $posts ): 
     foreach( $posts as $post ): 
        $zipField=get_field('zip_codes_serviced');
        //echo $zipField;
        $zipString = $zipField . ', ';
        //echo $zipArray;

        $array = explode(', ' , $zipString); //split string into array seperated by ', '

        foreach($array as $value) //loop over values
        {
            $cityField=get_field('city');
            $stateField=get_field('state');
            //echo $value. '<br>';            
            if($value==$userZip){

               echo ($cityField . '<br>' . $stateField); //print 
           }    
         }       
     endforeach;
    wp_reset_postdata(); 
 endif;

我试图让邮政编码功能在其中工作的整个模板文件如下所示：

<?php 
 /*
Template Name: Location
*
*/
get_header(); 
nectar_page_header($post->ID); 

//full page
$fp_options = nectar_get_full_page_options();
extract($fp_options);

?>
<?php
function zip_search($userZip){
    $posts = get_posts(array(
        'posts_per_page'    => -1,
        'post_type'         => 'Location'
    ));
    //Set user zip to 33606 for testing purposes
    //$userZip=33606;

    if( $posts ): 
        foreach( $posts as $post ): 
            $zipField=get_field('zip_codes_serviced');
            //echo $zipField;
            $zipString = $zipField . ', ';
            //echo $zipArray;

            $array = explode(', ' , $zipString); //split string into array seperated by ', '

            foreach($array as $value) //loop over values
            {
                $cityField=get_field('city');
                $stateField=get_field('state');
                //echo $value. '<br>';            
                if($value==$userZip){

                echo ($cityField . '<br>' . $stateField); //print 
            }   
            }       
        endforeach;
        wp_reset_postdata(); 
    endif; 
}
?>


<div class="container-wrap">

    <div class="<?php if($page_full_screen_rows != 'on') echo 'container'; ?> main-content">

        <div class="row">

            <?php 

            //breadcrumbs
            if ( function_exists( 'yoast_breadcrumb' ) && !is_home() && !is_front_page() ){ yoast_breadcrumb('<p id="breadcrumbs">','</p>'); } 

             //buddypress
             global $bp; 
             if($bp && !bp_is_blog_page()) echo '<h1>' . get_the_title() . '</h1>';

             //fullscreen rows
             if($page_full_screen_rows == 'on') echo '<div id="nectar_fullscreen_rows" data-animation="'.$page_full_screen_rows_animation.'" data-row-bg-animation="'.$page_full_screen_rows_bg_img_animation.'" data-animation-speed="'.$page_full_screen_rows_animation_speed.'" data-content-overflow="'.$page_full_screen_rows_content_overflow.'" data-mobile-disable="'.$page_full_screen_rows_mobile_disable.'" data-dot-navigation="'.$page_full_screen_rows_dot_navigation.'" data-footer="'.$page_full_screen_rows_footer.'" data-anchors="'.$page_full_screen_rows_anchors.'">';

                 if(have_posts()) : while(have_posts()) : the_post(); 

                     the_content(); 

                 endwhile; endif; 

            if($page_full_screen_rows == 'on') echo '</div>'; ?>

        </div><!--/row-->

    </div><!--/container-->
    <span><?php zip_search(33606);?></span>
    <span>Locations Landing Page--where zip code function can go </span>
</div><!--/container-wrap-->

<?php get_footer(); ?>

请参阅下面 var_dump($post); within 函数的结果，由于字符限制，我只包含了一小部分：

array(37) { [0]=> object(WP_Post)#1683 (24) { ["ID"]=> int(1490) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2018-09-21 15:39:29" ["post_date_gmt"]=> string(19) "2018-09-21 15:39:29" ["post_content"]=> string(0) "" ["post_title"]=> string(14) "Scottsdale, AZ" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "publish" ["comment_status"]=> string(6) "closed" ["ping_status"]=> string(6) "closed" ["post_password"]=> string(0) "" ["post_name"]=> string(13) "scottsdale-az" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2018-09-21 20:54:47" ["post_modified_gmt"]=> string(19) "2018-09-21 20:54:47" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(72) "http://dev-site-name.hostingsite.my/?post_type=location&p=1490" ["menu_order"]=> int(0) ["post_type"]=> string(8) "location" ["post_mime_type"]=> string(0) "" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" } [1]=> object(WP_Post)#1684 (24) { ["ID"]=> int(1488) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2018-09-21 15:37:36" ["post_date_gmt"]=> string(19) "2018-09-21 15:37:36" ["post_content"]=> string(0) "" ["post_title"]=> string(17) "Missouri City, TX" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "publish" ["comment_status"]=> string(6) "closed" ["ping_status"]=> string(6) "closed" ["post_password"]=> string(0) "" ["post_name"]=> string(16) "missouri-city-tx" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2018-09-21 15:37:36" ["post_modified_gmt"]=> string(19) "2018-09-21 15:37:36" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(72) "http://dev-site-name.hostingsite.my/?post_type=location&p=1488" ["menu_order"]=> int(0) ["post_type"]=> string(8) "location" ["post_mime_type"]=> string(0) "" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" } [2]=> object(WP_Post)#1685 (24) { ["ID"]=> int(1486) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2018-09-21 15:35:35" ["post_date_gmt"]=> string(19) "2018-09-21 15:35:35" ["post_content"]=> string(0) "" ["post_title"]=> string(11) "Houston, TX" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "publish" ["comment_status"]=> string(6) "closed" ["ping_status"]=> string(6) "closed" ["post_password"]=> string(0) "" ["post_name"]=> string(10) "houston-tx" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2018-09-21 15:35:35" ["post_modified_gmt"]=> string(19) "2018-09-21 15:35:35" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(72) "http://dev-site-name.hostingsite.my/?post_type=location&p=1486" ["menu_order"]=> int(0) ["post_type"]=> string(8) "location" ["post_mime_type"]=> string(0) "" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" } [3]=> object(WP_Post)#1686 (24) { ["ID"]=> int(1484) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2018-09-21 15:29:24" ["post_date_gmt"]=> string(19) "2018-09-21 15:29:24" ["post_content"]=> string(0) "" ["post_title"]=> string(9) "Sugarland" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "publish" ["comment_status"]=> string(6) "closed" ["ping_status"]=> string(6) "closed" ["post_password"]=> string(0) "" ["post_name"]=> string(9) "sugarland" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2018-10-10 19:29:31" ["post_modified_gmt"]=> string(19) "2018-10-10 19:29:31" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(72) "http://dev-site-name.hostingsite.my/?post_type=location&p=1484" ["menu_order"]=> int(0) ["post_type"]=> string(8) "location" ["post_mime_type"]=> string(0) "" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" } [4]=> object(WP_Post)#1687 (24) { ["ID"]=> int(1482) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2018-09-21 15:27:46" ["post_date_gmt"]=> string(19) "2018-09-21 15:27:46" ["post_content"]=> string(0) "" ["post_title"]=> string(13) "Grapevine, TX" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "publish" ["comment_status"]=> string(6) "closed" ["ping_status"]=> string(6) "closed" ["post_password"]=> string(0) "" ["post_name"]=> string(12) "grapevine-tx" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2018-09-21 15:27:46" ["post_modified_gmt"]=> string(19) "2018-09-21 15:27:46" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(72) "http://dev-site-name.hostingsite.my/?post_type=location&p=1482" ["menu_order"]=> int(0) ["post_type"]=> string(8) "location" ["post_mime_type"]=> string(0) "" ["comment_count"]=> string(1) "0" ["filter"]=> string(3) "raw" } [5]=> object(WP_Post)#1688 (24) { ["ID"]=> int(1480) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2018-09-21 15:25:31" ["post_date_gmt"]=> string(19) "2018-09-21 15:25:31" ["post_content"]=> string(0) "" ["post_title"]=> string(13) "Southlake, TX" ["post_excerpt"]=> string(0) "" ["post_status"]=> string(7) "publish" ["comment_status"]=> string(6) "closed" ["ping_status"]=> string(6) "closed" ["post_password"]=> string(0) "" ["post_name"]=> string(12) "southlake-tx" ["to_ping"]=> string(0) "" ["pinged"]=> string(0) "" ["post_modified"]=> string(19) "2018-09-21 15:25:31" ["post_modified_gmt"]=> string(19) "2018-09-21 15:25:31" ["post_content_filtered"]=> string(0) "" ["post_parent"]=> int(0) ["guid"]=> string(72) "http://dev-site-name.hostingsite.my/?post_type=location&p=1480"

Answer 1

我最终这样做了，最后决定 return post 的永久链接比城市和州更好：

function zip_search($userZip){

    $args = array(
    'posts_per_page'    => -1,
    'post_type'         => 'Locations'
    );

$wp_query = new WP_Query($args); 

if( $wp_query->have_posts() ): while( $wp_query->have_posts() ) : $wp_query->the_post();
      $zipField=get_field('zip_codes_services');

          $zipString = $zipField . ', ';        

          $array = explode(', ' , $zipString); //split string into array seperated by ', '

        foreach($array as $value) //loop over values
        {

            if($value==$userZip){
                $post_id = get_the_ID();
                $permalink=get_permalink($post_id);                 
               return ($permalink); //print 
           }    

        }
       endwhile; 
       wp_reset_postdata(); 
endif;
}

我正在编写一个 PHP 函数来搜索 Wordpress 模板文件中的一组邮政编码数组。为什么我的函数 return 没有值？

I'm writing a PHP function to search through array an array of zip codes in a Wordpress template file. Why won't my function return a value?

php

wordpress

advanced-custom-fields

acfpro