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Homephp教程php手册如何运用PHP stristr()函数进行字符查找

如何运用PHP stristr()函数进行字符查找

Jun 13, 2016 am 11:10 AM
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我们通过对

PHP stristr()函数--查找字符串在另一个字符串中第一次出现的位置。

定义和用法PHP stristr()函数查找字符串在另一个字符串中第一次出现的位置。如果成功,则返回字符串的其余部分(从匹配点)。如果没有找到该字符串,则返回 false。

语法stristr(string,search)

参数与描述
string 必需。规定被搜索的字符串。
find 必需。规定要查找的字符。如果该参数是数字,则搜索匹配该数字对应的 ASCII 值的字符。

提示和注释注释:该函数是二进制安全的。
注释:该函数对大小写不敏感。如需对大小写敏感的搜索,请使用strstr()。

PHP stristr()函数例子 1

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span> ?php  </span></span></span></li>
<li><span>echo stristr("Hello world!","WORLD");  </span></li>
<li class="alt"><span> </span></li>
<li>
<span class="tag">?></span><span> </span>
</li>
</ol>

输出:

world!

PHP stristr()函数例子 2

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span> ?php  </span></span></span></li>
<li><span>echo stristr("Hello world!",111);  </span></li>
<li class="alt">
<span class="tag">?></span><span> </span>
</li>
<li><span> </span></li>
</ol>

输出:

o world!


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