Question

我正在编辑一个Wordpress插件，如果我为多个图像设置滑块，它会显示一个选项，它会显示帖子列表中的所有图像，但我只需要先显示。如何在第一次循环后停止执行？

有代码

<?php if( isset( $postMetaData['_otw_slider_image'] ) && $postMetaData['_otw_slider_image'] ){?>
                    <?php $imagePath = parse_url( $sliderImages[0] );?>
                    <?php if( isset( $sliderImages[0] ) ){?>
                        <?php if( isset( $this->listOptions['image_link'] ) && in_array( $this->listOptions['image_link'], array( 'lightbox' ) ) ){?>
                            <?php $first_shown = false; ?>
                            <?php foreach( $sliderImages as $sImage ){?>
                                <?php $imagePath = parse_url( $sImage );?>
                                <a href="<?php echo $this->otwImageCrop->resize( $imagePath['path'], $imageLightboxWidth, $imageLightboxHeight, $this->imageCrop, $this->imageWhiteSpaces, $this->imageBackground, $imageLightboxFormat )?>" rel="otw_fslide_<?php echo $post->ID?>" title="<?php echo htmlentities( $post->post_title );?>" class="otw_in_slider otw_in_slider_<?php echo intval( $first_shown )?>" >
                                    <?php if( !$first_shown ){?>
                                        <img src="<?php echo $this->otwImageCrop->resize( $imagePath['path'], $this->imageWidth, $this->imageHeight, $this->imageCrop, $this->imageWhiteSpaces, $this->imageBackground, $this->imageFormat )?>" alt="" />
                                    <?php } ?>
                                </a>
                                <?php $first_shown = true;?>
                            <?php }?>
                        <?php }elseif( isset( $this->listOptions['image_link'] ) && in_array( $this->listOptions['image_link'], array( 'single' ) ) ){?>
                            <a href="<?php echo $permaLink?>">
                                <img src="<?php echo $this->otwImageCrop->resize( $imagePath['path'], $this->imageWidth, $this->imageHeight, $this->imageCrop, $this->imageWhiteSpaces, $this->imageBackground, $this->imageFormat )?>" alt="" />
                            </a>
                        <?php }else{ ?>
                            <img src="<?php echo $this->otwImageCrop->resize( $imagePath['path'], $this->imageWidth, $this->imageHeight, $this->imageCrop, $this->imageWhiteSpaces, $this->imageBackground, $this->imageFormat )?>" alt="" />
                        <?php }?>
                    <?php }?>
                <?php }else{?>
                    <div class="otw_portfolio_manager-slider" data-animation="slide">
                        <ul class="slides otw_portfolio_ul_slider">
                            <?php foreach( $sliderImages as $sliderImage ){?>
                                <li>
                                <?php
                                    $imagePath = parse_url($sliderImage);
                                    $sliderImgLink = false;
                                ?>
                                <?php if( isset( $this->listOptions['image_link'] ) && in_array( $this->listOptions['image_link'], array( 'lightbox' ) ) ){ $sliderImgLink = true;?>
                                    <a href="<?php echo $sliderImage?>" rel="otw_fslide_<?php echo $post->ID?>" class="otw_portfolio_manager-fancybox-slider" title="<?php echo htmlentities( $post->post_title );?>"></a>
                                <?php }?>
                                <?php if( isset( $this->listOptions['image_link'] ) && in_array( $this->listOptions['image_link'], array( 'single' ) ) ){ $sliderImgLink = true;?>
                                    <a href="<?php echo $imgLink?>" title="<?php echo $post->post_title;?>">
                                <?php }?>
                                    <img src="<?php echo $this->otwImageCrop->resize( $imagePath['path'], $this->imageWidth, $this->imageHeight, $this->imageCrop, $this->imageWhiteSpaces, $this->imageBackground, $this->imageFormat )?>" alt="" data-item="media">
                                <?php if( $sliderImgLink ){?>
                                    </a>
                                <?php }?>
                                </li>
                            <?php }?>
                            </ul>
                        </div>
                    <?php }?>

Answer 1

这是一个可以在代码中执行相同操作的示例。

$i = 0;

foreach ($largedata as $data) {
   if($i == 0) {
      echo $data->id;
   }
   $i++;
}

希望你能从例子中得到它。

Answer 2

不是不必要地循环遍历整个$sliderImages数组（假设这里是一个数组，而不是Iterator），只需从数组中抓取第一个滑块图像：

<?php if (isset( $this->listOptions['image_link'] ) && in_array($this->listOptions['image_link'], array('lightbox' ))) { ?>
    <?php $sliderImages = array_values($sliderImages); ?>
    <?php $sImage = $sliderImages[0]); ?>
    <?php $imagePath = parse_url($sImage); ?>
    <a href="<?php echo $this->otwImageCrop->resize( $imagePath['path'], $imageLightboxWidth, $imageLightboxHeight, $this->imageCrop, $this->imageWhiteSpaces, $this->imageBackground, $imageLightboxFormat )?>" rel="otw_fslide_<?php echo $post->ID?>" title="<?php echo htmlentities( $post->post_title );?>" class="otw_in_slider otw_in_slider_<?php echo intval( $first_shown )?>">
        <img src="<?php echo $this->otwImageCrop->resize( $imagePath['path'], $this->imageWidth, $this->imageHeight, $this->imageCrop, $this->imageWhiteSpaces, $this->imageBackground, $this->imageFormat )?>" alt="" />
    </a>
<?php } elseif (isset($this->listOptions['image_link'] ) && in_array($this->listOptions['image_link'], array( 'single' ))) { ?>
    <?php // other logic here?>
<?php } ?>

注意使用array_values()规范化$sliderImages的键，因此可以使用0作为键来引用它的第一个元素（不知道是什么$sliderImages的键看起来像）。

供参考，见：

http://php.net/manual/en/function.array-values.php

PHP - 在显示的第一张图片上停止foreach

2 个答案: