为什么不显示html？
[英]Why won't this display the html?
问题描述
Why won't this work? 
为什么不起作用？ It should only display the html if the $a Boolean is true. 仅当$ a布尔值为true时，才应显示html。 Am I displaying html conditionally with php correctly? 我是否有条件用php正确显示html？ I really don't know why it won't work. 我真的不知道为什么它不起作用。 I would really appreciate any help that could be given to me. 我将不胜感激。 :) :)
<!DOCTYPE html>
<html>
<?php
$a = False;
if($a == True){
<head>
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<h2>Lorem ipsum dolor sit amet magna egestas<br class="mobile-hide" />
morbi bibendum sed malesuada</h2>
<p>Tempus feugiat veroeros sed nullam dolore</p>
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facilisis leo magna. Cras sit amet urna eros, id egestas urna. Quisque aliquam
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facilisis leo magna. Cras sit amet urna eros, id egestas urna. Quisque aliquam
tempus euismod. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices
posuere cubilia.</p>
<p>Phasellus nisl nisl, varius id porttitor sed, pellentesque ac orci. Pellentesque
habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Morbi
bibendum justo sed mauris vehicula malesuada aliquam elit imperdiet. Aliquam eu nibh
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<p>Rutrum bibendum. Proin pellentesque diam non ligula commodo tempor. Vivamus
eget urna nibh. Curabitur non fringilla nisl. Donec accumsan interdum nisi, quis
tempus.</p>
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eget urna nibh. Curabitur non fringilla nisl. Donec accumsan interdum nisi, quis
tempus.</p>
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Nam pharetra laoreet imperdiet volutpat etiam consequat feugiat.
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<script src="assets/js/main.js"></script>
</body>
} ?>
</html>
2 个解决方案
解决方案1
7 已采纳 2015-09-08 13:57:15
you need to turn PHP off when you are outputting raw HTML so at the top change to this 您在输出原始HTML时需要关闭PHP，因此最主要的更改是
<!DOCTYPE html>
<html>
<?php
$a = False;
if($a == True){
?> <-- new line
<head>
And at the bottom change to this 并在底部更改为
</body>
<?php } ?> <-- changed line
解决方案2
1 2015-09-08 13:59:09
Your problem is that you're trying to parse the HTML as PHP. 您的问题是您试图将HTML解析为PHP。 You have to either close the PHP-tag, or echo it. 您必须关闭PHP标记，或对其进行回显。 It'd probably be better to just close the PHP-tag, as such: 最好仅关闭PHP标签，如下所示：
if($a == True){
?>
<head>
<!--- More HTML here --->
and to open it before the closing-bracket of your if-statement: 并在if语句的右括号之前将其打开：
<!--- HTML coming in here... --->
</body>
<?php } ?>
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