使用php echo显示图像时，Firefox和Explorer的行为会有所不同
问题描述：
The image box on this page "http://www.ebookfetcher.com/bookdeals/index.php?pid=23" appears in Firefox and Explorer, but not Chrome and Safari. How do I make it invisible for all of them when $bookpage_coverimage is empty?
<a href="http://www.ebookfetcher.com" class="linkstyle"><img src="<?php echo $bookpage_coverimage ?>" width="260"></a>
此页面上的图像框“ http://www.ebookfetcher.com/bookdeals/index.php?pid=23 ”出现在Firefox和资源管理器中，但不出现在Chrome和Safari中。 当$ bookpage_coverimage为空时，如何让它对所有这些都不可见？ p>
＆lt; a href =“http://www.ebookfetcher.com”class =“linkstyle “＆gt;＆lt; img src =”＆lt;？php echo $ bookpage_coverimage？＆gt;“ width =“260”＆gt;＆lt; / a＆gt;
code> pre>
div>
答
With a simple if statement in PHP.
<?php if($bookpage_coverimage !=""){ ?><a href="http://www.ebookfetcher.com" class="linkstyle"><img src="<?php echo $bookpage_coverimage ?>" width="260"></a><?php } ?>
Should do the trick, it will not output any html if its empty.