How to get file extension via PHP-PHP Tutorial-php.cn

How to get file extension via PHP

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Release： 2023-04-03 08:04:01

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This article mainly introduces how to obtain the file extension through PHP, which has certain reference value. Now I share it with everyone. Friends in need can refer to it

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##The first type

substr(strrchr("http://www.xxx.com/public/abc.jpg", &#39;.&#39;), 1);
string strrchr(&#39;string&#39;,&#39;needle&#39;) 获取字符串中出现指定字符串的最后位置到末尾的内容
int strrpos(&#39;string&#39;,&#39;needle&#39;) 获取字符串中出现指定字符串的最后位置
string substr(&#39;string&#39;,&#39;position&#39;) 从指定位置截取字符串到末尾
string strchr(&#39;string&#39;,&#39;needle&#39;) 获取字符串中出现指定字符串的最先位置到末尾的内容
int strpos(&#39;string&#39;,&#39;needle&#39;) 获取字符串中出现指定字符串的最先位置

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The second type

substr($path, strrpos($path, &#39;.&#39;) + 1)

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The third type

array_pop(explode(&#39;.&#39;, $path))

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The fourth type

(pathinfo($path))[&#39;extension&#39;]
　　pathinfo($path) 返回：　
&#39;dirname&#39; => string &#39;http://www.baidu.com/public&#39; (length=27)
&#39;basename&#39; => string &#39;abc.jpg&#39; (length=7)
&#39;extension&#39; => string &#39;jpg&#39; (length=3)
&#39;filename&#39; => string &#39;abc&#39; (length=3)

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