disk_free_space() 函数返回目录中的可用空间
语法
disk_free_space(directory)
参数 directory 必需。规定要检查的目录。
directory 参数是一个目录的字符串。该函数将根据相应的文件系统或磁盘分区返回可用的字节数。
实例
获取指定目录下的所有可用空间,返回整形数据,单位是字节,下面是演示disk_free_space函数使用方法的实例.
<?PHP $SdiskSpace=round(disk_free_space("c:\\")/1024/1024/1024,2); echo($diskSpace,"GB") ?>
程序中调用disk_free _space()函数,获取C:\目录的可用空间(即C盘的可用空间),返回的数据单位是字节,所以程序将其3次降以1024,将数据单位转换为GB,调用round()函数可以对得到的数据进行四舍五入,只保留小数点后两位.
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