PHP使用glob函数遍历目录或文件夹的方法,
PHP使用glob函数遍历目录或文件夹的方法,
本文实例讲述了PHP使用glob函数遍历目录或文件夹的方法。分享给大家供大家参考。具体分析如下:
一说到php遍历目录我们很多朋友会想到是opendir与readdir,这样就可以遍历目录并显示文件,但在php中有一个更简洁的遍历目录的函数glob估计很少有人知道此函数,不过我觉得比起opendir与readdir要简单多了.
PHP glob函数的使用:glob—寻找与模式匹配的文件路径.
例子,代码如下:
复制代码 代码如下:
$fileList=glob('*.*');
for ($i=0; $i
';
}
$fileList2=glob('images/*');
for ($i=0; $i
';
}
$fileList3=glob('*');
for ($i=0; $i
';
}
?>
第一种:glob函数的参数里面是:*.* ,意思是扫描当前目录下的文件,不包括文件夹,返回的是一个数组,以下二种情况一样.
第二种:glob函数的参数里面是:images/*,是指定目录扫描所有的文件,包括文件夹,也可以扫描指定的文件类型,如:images/*.jpg;注意,如果只输入:images只会返回该文件夹名称,如果只输入:images/则什么也不会返回.
第三种:glob函数的参数里面是:*,可以扫描出当前目录下的所有文件、目录及子目录的文件.
好我们再看看opendir与readdir遍历目录,代码如下:
复制代码 代码如下:
/**********************
一个简单的目录递归函数
第一种实现办法:用dir返回对象
***********************/
function tree($directory)
{
$mydir = dir($directory);
echo "
- \n";
- $file \n";
- $file \n";
while($file = $mydir->read())
{
if((is_dir("$directory/$file")) AND ($file!=".") AND ($file!=".."))
{
echo "
tree("$directory/$file");
}
else
echo "
}
echo "
$mydir->close();
}
//开始运行
echo "
目录为粉红色
\n";
tree("./nowamagic");
/***********************
第二种实现办法:用readdir()函数
************************/
function listDir($dir)
{
if(is_dir($dir))
{
if ($dh = opendir($dir))
{
while (($file = readdir($dh)) !== false)
{
if((is_dir($dir."/".$file)) && $file!="." && $file!="..")
{
echo "文件名:",$file,"
";
listDir($dir."/".$file."/");
}
else
{
if($file!="." && $file!="..")
{
echo $file."
";
}
}
}
closedir($dh);
}
}
}
//开始运行
listDir("./nowamagic");
?>
好了大家都看到子glob与opendir与readdir遍历输入的写法了,从代码简洁上来说glob是完胜了opendir与readdir,在功能实现上达到的是相同的效果,所以推荐使用glob函数遍历目录吧。
希望本文所述对大家的PHP程序设计有所帮助。

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