试试这个。。。它至少应该为你指明正确的方向。请注意，在不知道您的功能/选项是什么的情况下very hard 给出一个好的答案。

<?php
try {
  $do_echo = true;
  if (is_front_page() || is_home()) {
    if ( $do_echo ) { echo "<p>Is front page or blog</p>"; }
    $test = get_theme_mod(\'rand_slide\');
    if ( $do_echo ) { echo "<p>get theme mode: {$test}</p>"; }
    if (get_theme_mod(\'rand_slide\') == \'static\') {
      if ( $do_echo ) { echo "<p>Random slide is static</p>"; }
      for ($i = 1; $i < 6; $i++) {
        $test_two = of_get_option(\'slide\' . $i, true);
        if ( $do_echo ) { echo "<p>of_get_option( slide{$i}, true ) is {$test_two}</p>"; }
        if (of_get_option(\'slide\' . $i, true) != "") {
            if ( $do_echo ) { echo "<p>In inner loop for {$i}</p>"; }
            $imgUrl = esc_url(of_get_option(\'slide\' . $i, true));
            if ( $do_echo ) { echo "<p>imgUrl is now {$imgUrl}</p>"; }
            $imgTitle = esc_html(of_get_option(\'slidetitle\' . $i, true));
            $imgDesc = esc_html(of_get_option(\'slidedesc\' . $i, true));
            $imgHref = esc_html(of_get_option(\'slideurl\' . $i, true));
            if ($imgUrl != \'\') {
                if ( $do_echo ) { echo "<p>Going to echo slide...</p>"; }
                $to_echo = \'{image : \\\'\' . $imgUrl . \'\\\', title : \\\'<div class="slide-title"><span>\' . ( ($imgHref != \'\' && $imgTitle != \'\') ? \'<a href="\' . $imgHref . \'">\' : \'\') . $imgTitle . ( ($imgHref != \'\' && $imgTitle != \'\') ? \'</a>\' : \'\') . \'</span></div><div class="slide-description"><span>\' . $imgDesc . \'</span></div>\' . ( ($imgHref != \'\') ? \'<div class="slide-description"><span><a href="\' . $imgHref . \'">Read More &rsaquo;</a></span></div>\' : \'\') . \'\\\', thumb : \\\'\' . $imgUrl . \'\\\', url : \\\'\\\'},\' . "\\n";
               if ( $do_echo ) { echo "<p>Would now echo " . html_attributes($to_echo) . "</p>";
               echo $to_echo;
            } else if ( $do_echo ) {
               echo "<p>imgUrl empty, not displaying slide</p>";
            }
        } else if ( $do_echo ) {
            echo "<p>of_get_option returned empty string. not echoing slide.</p>";
        }
      }
    } elseif (get_theme_mod(\'rand_slide\') == \'random\') {
      $args = array(
        \'post_type\' => \'attachment\',
        \'meta_key\' => \'on_front_page\',
        \'meta_value\' => \'1\',
        \'orderby\' => \'rand\',
        \'posts_per_page\' => 6,
        \'max_num_pages\' => 1,
      );

      $slides = new WP_Query($args);

      if ($slides->have_posts()) {
        while ($slides->have_posts()) {
            $img = $slides->next_post();
            $imgId = $img->ID;
            $imgTitle = $img->post_title;
            $imgHref = get_permalink($img);
            $imgDesc = $img->post_content;
            $imgData = wp_get_attachment_image_src($imgId, \'thumbnail\');
            $imgUrl = $imgData[0];
            if ($imgUrl != \'\') {
                echo \'{image : \\\'\' . $imgUrl . \'\\\', title : \\\'<div class="slide-title"><span>\' . ( ($imgHref != \'\' && $imgTitle != \'\') ? \'<a href="\' . $imgHref . \'">\' : \'\') . $imgTitle . ( ($imgHref != \'\' && $imgTitle != \'\') ? \'</a>\' : \'\') . \'</span></div><div class="slide-description"><span>\' . $imgDesc . \'</span></div>\' . ( ($imgHref != \'\') ? \'<div class="slide-description"><span><a href="\' . $imgHref . \'">Read More &rsaquo;</a></span></div>\' : \'\') . \'\\\', thumb : \\\'\' . $imgUrl . \'\\\', url : \\\'\\\'},\' . "\\n";
            }
        }
      }
    }
  }
} catch ( Exception $e ) {
    echo "<p>A fatal error has occurred...</p><pre>" . print_r($e, true) . "</pre>";
}

是的，这是黑客的。。。但是通过做一系列的回音陈述，你应该确切地看到你所期待的事情没有发生。

正如Howdy所指出的，确保打开调试标志，并以这种方式检查问题。

如果您至少没有运行PHP 5，那么请删除周围的try/catch块。

就个人而言，如果您的代码有问题，我建议您：

确保将各种WP\\U调试标志设置为true例如，在代码中，您可以执行以下操作：

if ( $imgUrl != \'\' ) {
   # do stuff
}

你真的应该考虑

if ( !empty( $imgUrl ) ) {
   # do stuff
} else {
   # unexpected! Maybe throw and handle an exception, add to the server error log, etc.
}

从长远来看，这会让你省去很多头痛的事。