Detailed example of how to use php to read all file names in a subdirectory

The example in this article describes the method of reading all file names in a directory and subdirectories in PHP, and shares it with you for your reference. The specific implementation method is as follows:

Generally speaking, there are many ways to read file names in a directory in PHP. The simplest one is scandir. The specific code is as follows:

The code is as follows:

$dir="./caxa/";
$file=scandir($dir);
print_r($file);

The slightly more complicated one comes from the php manual:

The code is as follows:

$dir = "/etc/php5/";
// Open a known directory, and proceed to read its contents
if (is_dir($dir)) {
if ($dh = opendir($dir)) {
while (($file = readdir($dh)) !== false) {
echo "filename: $file : filetype: " . filetype($dir . $file) . "\n";
} closedir($dh);
}
}

These Both can only read files in the currently specified directory, but cannot read files in subdirectories. It turned out that I had written a piece of code to delete all directories in a loop. I needed to delete all files in subdirectories one by one, including multiple layers. But you only need to read the file name, which is a little more complicated. I found one online that works. The original code has an error message. I changed the reference to &$data as follows:

The code is as follows:

function searchDir($path,&$data){
if(is_dir($path)){
$dp=dir($path);
while($file=$dp->read()){
if($file!='.'&& $file!='..'){
searchDir($path.'/'.$file,$data);
}
}
$dp->close();
}
if(is_file($path)){
$data[]=$path;
}
}

function getDir($dir){
$data=array();
searchDir($dir,$data);
return   $data;
}
print_r(getDir('.'));

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