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

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", '.'), 1); string strrchr('string','needle') 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('string','needle') 获取字符串中出现指定字符串的最后位置 string substr('string','position') 从指定位置截取字符串到末尾 string strchr('string','needle') 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('string','needle') 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, '.') + 1)

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The third type

array_pop(explode('.', $path))

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The fourth type

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

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