PHP Recursive foreach loop - php

Question

I have a list of files in a directory in the format of YearMonthDay Time as below
20080508-120801suggestions.sql
20090508-120737categories.sql
20100508-120737articlelikes.sql
20110508-120737article.sql
20120508-120737comments.sql
20120508-120737loginusers.sql
20120508-120737popsearch.sql
20120508-120737suggestions.sql
20120508-120801article.sql
I want my PHP to display one item for the years then when you expand that it will then show you one item for the months then again one item for the day then in there all available backups for that day.
I have the first bit done where by it lists all the unique years and have been staring at the code for too long to know where to go next.
I am passing the variable year in to the URL so can pull that down as part of the code as required.
if ($handle = opendir($_SERVER['DOCUMENT_ROOT'] . 'sqlbackup/'))
{
while (false !== ($entry = readdir($handle)))
{
$isYearfound = 'false';
//$dirlist = array();
if (($entry != ".") AND ($entry != ".."))
{
foreach ($dirarray as $dirarrayyear)
{
if (substr($entry, 0, 4) == $dirarrayyear)
{
$isYearfound = 'true';
}
}
if ($isYearfound == 'false')
{
$dirarray[] = substr($entry, 0, 4);
Print "<a href='myknowledge.php?mnpage=managedb&date=" . substr($entry, 0, 4) . "'>" . substr($entry, 0, 4) . "</a><br/>";
}
//Print $entry . "<br/>";
}
}
closedir($handle);
}

Answer 1

So the first part looks fine. But you probably want to pass the year and month in the URL so that the code then compares the first 6 characters of the filename, and then for those URLs generated it would pass the full 8 characters.
first pass date=2008
second pass date=200805
third pass date=20080501

Answer 2

hello Form what i see all the month are 05 so you would not get disred result ... i change the dates in my demo and i got this
$dir = new DirectoryIterator('PATH_TO_SQL_DIR');
$list = array();
foreach($dir as $file)
{
if($file->isDot())
continue;
list($prifix,$surfix) = explode("-", $file->getFilename(),2);
$date = DateTime::createFromFormat("Ymd", $prifix);
$year = $date->format("Y");
$month = $date->format("M");
if(!isset($list[$year]))
{
$list[$year] = array();
}
if(!in_array($month, $list[$year]))
{
$list[$year][] = $month;
}
}
echo "<pre>" ;
print_r($list);
Output
Array
(
[2008] => Array
(
[0] => May
[1] => Dec
)
[2009] => Array
(
[0] => May
)
[2010] => Array
(
[0] => May
)
[2011] => Array
(
[0] => May
)
[2012] => Array
(
[0] => Jan
[1] => Feb
[2] => May
[3] => Dec
)
)
You can not use this to build any kind of links you want ...

Answer 3

I have created a script for you that my help.
It is not recursive but I think it does what you want and you don't need to make recursive at all.
please change directory paths/script names, etc to yours and it will work for you.
$dir = scandir('myfiles');
$prevyear=0;
$prevmonth=0;
$prevday=0;
foreach ($dir as $file) {
if ($file!='.' && $file!='..') {
if (isset($_GET["year"]) && isset($_GET["month"]) && isset($_GET["day"])) { //if all three is set show file
if (preg_match('/^'.$_GET["year"].$_GET["month"].$_GET["day"].'/',$file,$match)) {
echo ''.$file.'<br />';
}
} else if (isset($_GET["year"]) && isset($_GET["month"])) { //if only year and month set show days
if (preg_match('/^'.$_GET["year"].$_GET["month"].'/',$file,$match)) {
$day = preg_replace(array('/^\d{6}/','/\-.*?$/'),'',$file);
if ($day!=$prevday) {
echo '' . $day . '<br />';
$prevday=$day;
}
}
} else if (isset($_GET["year"])) { //if only year set show months
if (preg_match('/^'.$_GET["year"].'/',$file,$match)) {
$month = preg_replace(array('/^\d{4}/','/\d{2}\-.*?$/'),'',$file);
if ($month!=$prevmonth) {
echo '' . $month . '<br />';
$prevmonth=$month;
}
}
} else { //if nothing set show years
$year = preg_replace('/\d{4}\-.*?$/','',$file);
if ($year!=$prevyear) {
echo '' . $year . '<br />';
$prevyear=$year;
}
}
}
}

Answer 4

Thanks very much to Baba for all the help. This is the code I used in the end to resolve the issue.
$dir = new DirectoryIterator($_SERVER['DOCUMENT_ROOT'] . 'sqlbackup/');
$list = array();
foreach($dir as $file)
{
if($file->isDot())
continue;
list($prifix,$surfix) = explode("-", $file->getFilename(),2);
$date = DateTime::createFromFormat("Ymd", $prifix);
$year = $date->format("Y");
$month = $date->format("m");
$day = $date->format("d");
if(!isset($list[$year]))
{
$list[$year] = array();
}
if(!in_array($day, $list[$year][$month][$day]))
{
$list[$year][$month][$day] = $day;
}
}
echo "<pre>" ;
foreach (array_keys($list) as $value)
{
Print "<a href='myknowledge.php?mnpage=managedb&date=" . $value . "'>" . $value . "</a><br/>";
if ($value == substr($_GET['date'], 0, 4))
{
foreach (array_keys($list[$value]) as $value2)
{
Print " <a href='myknowledge.php?mnpage=managedb&date=" . $value . $value2 ."'>" . $value2 . "</a></br/>";
}
}
}
//print_r($list);