PHP字符串连接的实际代码编写方式

PHP字符串连接的实际代码编写方式_PHP教程

WBOY

Lepaskan： 2016-07-15 13:29:56

asal

854 orang telah melayarinya

要让多个字符串进行衔接，要用到一个(.)“点”号,比如:

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span>   </span></span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">name</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"w3pop"</font></span><span>;   </span>
</li>
<li class="alt"><span>echo $name.".com";   </span></li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>   </span>
</li>
</ol>

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上面的输出结果就是w3pop.com

有一种PHP字符串连接的情况，当echo后面使用的是(")双引号的话可以这样来达到和上同样的效果：

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span>   </span></span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">name</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"w3pop"</font></span><span>;//这句一样   </span>
</li>
<li class="alt"><span>echo "$name.com";//双引号里的变量还是可以正常显示出来，<br>并和一般的字符串自动区分开来   </span></li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>   </span>
</li>
</ol>

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但如果是单引号的话，就会将里面的内容完全以字符串形式输出给浏览器：

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span>   </span></span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">name</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"w3pop.com"</font></span><span>;   </span>
</li>
<li class="alt"><span>echo '$name.com';   </span></li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>   </span>
</li>
</ol>

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将显示$name.com

PHP字符串连接示例代码：

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span>   </span></span></li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">name</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"w3pop"</font></span><span>;   </span>
</li>
<li class="alt"><span>echo $name.".com";   </span></li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>   </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span></span></font></strong><span> </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span>   </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span>   </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">name</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"w3pop"</font></span><span>;   </span>
</li>
<li class=""><span>echo "$name.com";   </span></li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>   </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span></span></font></strong><span> </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span>   </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span>   </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">name</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"w3pop.com"</font></span><span>;   </span>
</li>
<li class="alt"><span>echo '.com';   </span></li>
<li class="">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span>   </span>
</li>
</ol>

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输出结果

w3pop.com

w3pop.com.com

$name.com

怎么样，大家通过上面这三段代码的演示，是否已经初步掌握了PHP字符串连接的方法了呢？