php获取文件名称和扩展名的方法_php实例
本篇文章主要介绍了php获取文件名称和扩展名的方法,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧
php获取文件名称和扩展名
1.basename()-返回路径的文件名
请看下面php代码:
<?php $path = "/usr/www/html/index.php"; echo basename($path)."<br>"; //如果选择suffix则忽略扩展名 echo basename($path,".php"); ?>
运行结果:
index.php
index
2.dirname()-返回当前脚本的文件路径!
php代码:
<?php //——FILE__返回文件完整路径 $dir = dirname(__FILE__); echo $dir; ?>
运行结果:
F:\web\zend\exercise
3.pathinfo() 返回一个关联数组包含有 path 的信息。
包括以下的数组单元:路径名称dirname,文件名称basename 和 扩展名称extension。
请看下面简单代码演示:
<?php $path = "/usr/www/html/index.php"; $pathinfo = pathinfo($path); echo "目录名称:$pathinfo[dirname]<br>"; echo "文件名称:$pathinfo[basename]<br>"; echo "扩展名:$pathinfo[extension]"; ?>
运行结果:
目录名称:/usr/www/html
文件名称:index.php
扩展名:php
4.realpath -- 返回规范化的绝对路径名
php代码如下:
<?php $path = "./exercise/php.txt"; $realpath = realpath($path); echo $realpath; ?>
最后注意一个小技巧:不同路径的文件路径操作符可能,不同,windows下可以用"/"和"\",
linux下只能用"/",所以开发的时候,建议都用"/",如我上面的文件路径写法!
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持php中文网。

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