PHP 获取文件扩展名 pathinfo
echo pathinfo('/www/htdocs/your_image.jpg', PATHINFO_EXTENSION);
<?php
$file_path = pathinfo('/www/htdocs/your_image.jpg');
echo "$file_path ['dirname']\n";
echo "$file_path ['basename']\n";
echo "$file_path ['extension']\n";
echo "$file_path ['filename']\n"; // only in PHP 5.2+
?>
$file_path = pathinfo('/www/htdocs/your_image.jpg');
echo "$file_path ['dirname']\n";
echo "$file_path ['basename']\n";
echo "$file_path ['extension']\n";
echo "$file_path ['filename']\n"; // only in PHP 5.2+
?>
以上将输出
/www/htdocs
your_image.jpg
jpg
your_image
your_image.jpg
jpg
your_image
注意: pathinfo 支持第3个参数
* PATHINFO_DIRNAME - 目录
* PATHINFO_BASENAME - 文件名(含扩展名)
* PATHINFO_EXTENSION - 扩展名
* PATHINFO_FILENAME - 文件名(不含扩展名)
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