68 lines
1.7 KiB
PHP
68 lines
1.7 KiB
PHP
<?php
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if (!defined('__TYPECHO_ROOT_DIR__')) exit;
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/**
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* 获取文章缩略图
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* 获取顺序： 自定义字段（thumb）> 文章第一张图片 > 系统图库
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* @param $obj
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* @return 获取文章头图
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*/
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function get_postthumb($obj) {
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if(isset($obj->fields->thumb)){
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return $obj->fields->thumb;
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}
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preg_match( "/<img[^>]+src\s*=\s*['\"]([^'\"]+)['\"][^>]*>/ ", $obj->content, $matches );
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if(isset($matches[1])){
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return $matches[1];
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}
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preg_match( "/!\[(.*?)\]\((.*?)\)/ ", $obj->content, $matches );
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if(isset($matches[2])) {
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return$matches[2];
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}
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$thumbPath = __DIR__ .'/static/medias/featureimages/';
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$files = scandir($thumbPath);
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$thumbs = [];
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for ($i = 0; $i < count($files); $i++) {
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if(is_file($thumbPath . $files[$i])){
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$thumbs[] = $files[$i];
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}
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}
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return Helper::options()->themeUrl .'/static/medias/featureimages/'. $thumbs[rand(0, count($thumbs) - 1)];
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}
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/**
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* @param $obj 对象
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* @return string 上一页url
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*/
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function getPrevPageLink($obj){
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ob_start();
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$obj->pagelink("prev", "prev");
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$pageLink = ob_get_contents();
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ob_end_clean();
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preg_match("/<a[^>]+href\s*=\s*['\"]([^'\"]+)['\"][^>]*>/", $pageLink, $matches);
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if(isset($matches[1])){
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return $matches[1];
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}
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return "#";
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}
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/**
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* @param $obj 对象
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* @return string 下一页url
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*/
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function getNextPageLink($obj){
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ob_start();
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$obj->pageLink("next", "next");
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$pageLink = ob_get_contents();
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ob_end_clean();
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preg_match("/<a[^>]+href\s*=\s*['\"]([^'\"]+)['\"][^>]*>/", $pageLink, $matches);
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if(isset($matches[1])){
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return $matches[1];
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}
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return "#";
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} |