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Home Backend Development PHP Tutorial PHP的一个IF语句总也写不好。

PHP的一个IF语句总也写不好。

Jun 06, 2016 pm 08:15 PM
php

在此之前是读取数据库代码,此处略去。。。
然后到这里,就不会了。。

<code> if $row['name]="" or is_null($row['name']);?>
<em class="bold">找人起个名字吧!</em>
<?else ?>
<em class="bold">这个名字还不错么</em>
 end if?>
</code>
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问题一:第一行这样写报错为:

PHP Parse error: syntax error, unexpected '$row' (T_VARIABLE), expecting '(' in I:\php\index.php on line 119

其他行有没有错暂时未知

问题二:有没有快捷的写法,即都按PHP写,而不是和HTML混写在一起,貌似这样的执行效率会很差。

好吧,我承认这是从asp改过来的,刚学PHP,也不知道去哪里查这些问题。

回复内容:

在此之前是读取数据库代码,此处略去。。。
然后到这里,就不会了。。

<code> if $row['name]="" or is_null($row['name']);?>
<em class="bold">找人起个名字吧!</em>
<?else ?>
<em class="bold">这个名字还不错么</em>
 end if?>
</code>
Copy after login
Copy after login

问题一:第一行这样写报错为:

PHP Parse error: syntax error, unexpected '$row' (T_VARIABLE), expecting '(' in I:\php\index.php on line 119

其他行有没有错暂时未知

问题二:有没有快捷的写法,即都按PHP写,而不是和HTML混写在一起,貌似这样的执行效率会很差。

好吧,我承认这是从asp改过来的,刚学PHP,也不知道去哪里查这些问题。

else漏了冒号
endif中没有空格

if最后的分号改成冒号,然后在endif后面加上分号。

if 后面的条件要用括号包起来

<code> if ($row['name']="" or is_null($row['name'])): ?>
<em class="bold">找人起个名字吧!</em>
 else: ?>
<em class="bold">这个名字还不错么</em>
 endif; ?>
</code>
Copy after login

if 后面的条件要用括号括起来,$row['name],这里少了一个单引号,else要改成else:,end if 要改成 endif;

$row['name]="" 这里的name少一个'引号 , 还有这个判断里不应该是两个等号么?

PHP做web开发 混编是难免的。也可以用模板引擎,只不过现在你还是把混编弄理解吧。

题主,我怎么感觉你这是用的CI框架。

快捷的写法就是模板引擎了,大部分现在框架都有。比如laravel的Blade

<code>@if($row['name]="" or is_null($row['name']))
<em class="bold">找人起个名字吧!</em>
@else
<em class="bold">这个名字还不错么</em>
@endif</code>
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