在header.php中为foreach（）提供的参数无效

Question

此错误不断循环，我的error_log不断增加。

PHP警告：第491行的header.php中为foreach（）提供的参数无效

<?php 
// (get_option_tree('theme_skin', '', false)!=""&&get_option_tree('theme_skin', '', false)!="Default") || 
if(true){

 $theme_background_color="#3f92a8"; 

// if(get_option_tree('theme_background_color', '', false)!="")

//    $theme_background_color=get_option_tree('theme_background_color', '', false); 

if(!isset($_GET['presets'])){

if($_GET['presets']=='preset1')

    $theme_background_color='#3f92a8';

if($_GET['presets']=='preset2')

    $theme_background_color='#b71010';

if($_GET['presets']=='preset3')

    $theme_background_color='#E16204';

if($_GET['presets']=='preset4')

    $theme_background_color='#1b5e88';

if($_GET['presets']=='preset5')

    $theme_background_color='#13D7FD';

if($_GET['presets']=='preset6')

    $theme_background_color='#685518';

if($_GET['presets']=='preset7')

    $theme_background_color='#5B2F2A';

if($_GET['presets']=='preset8')

    $theme_background_color='#6A6664';

if($_GET['presets']=='preset9')

    $theme_background_color='#C53D96';

if($_GET['presets']=='preset10')

    $theme_background_color='#62CDDF';

if($_GET['presets']=='preset11')

    $theme_background_color='#AD00B4';

if($_GET['presets']=='preset12')

    $theme_background_color='#6000A0';

if($_GET['presets']=='preset13')

    $theme_background_color='#990';

if($_GET['presets']=='preset14')

    $theme_background_color='#353535';

if($_GET['presets']=='preset15')

    $theme_background_color='#706852';

if($_GET['presets']=='preset16')

    $theme_background_color='#BCDD39';

if($_GET['presets']=='preset17')

    $theme_background_color='#FC0';

if($_GET['presets']=='preset18')

    $theme_background_color='#600';

if($_GET['presets']=='preset19')

    $theme_background_color='#FF7400';

if($_GET['presets']=='preset20')

    $theme_background_color='#b0c288';

}



?>

<div class="grid_10 abr-omega" id="slogan">
  <div class="socialMedia">
    <div class="socialIco"><span></span></div>
    <div style="text-align: right;" class="smile">
    <?php
    $slides = get_option_tree('sm_icons', $option_tree, false, true, -1);
    
    foreach ($slides as $slide) {
    
      echo '<a href="' . $slide['link'] . '"><img src="' . $slide['image'] . '" alt="' . $slide['title'] . '" /></a>
      ';
    }
    ?>
  <div class="clear"></div>
  </div>
</div>

任何人都知道如何解决这个问题？这是来自WordPress主题。

谢谢。

Answer 1

试试这段代码。 $slides应该是一个非空或字符串的数组。

$slides = get_option_tree('sm_icons', $option_tree, false, true, -1);

if(count($slides)>0){
    foreach ($slides as $slide) {

      echo '<a href="' . $slide['link'] . '"><img src="' . $slide['image'] . '" alt="' . $slide['title'] . '" /></a>
      ';
    }
}