Can someone please xplain this code. Im reading larry ullmans book on php and i dont get this part. Thanks in advance!!
$search_dir = '.';
$contents = scandir($search_dir);
print '<h2>Directories</h2>
<ul>';
foreach ($contents as $item) {
if ( (is_dir($search_dir . '/' . $item)) AND (substr($item, 0, 1) != '.') ) {
print "<li>$item</li>\n";
}
}
print '</ul>';
It shows you list of all directories in current directory
I'll repost your code with comments to exaplain what each line does.
$search_dir = '.'; //Set the directory to search. "." means the current one.
$contents = scandir($search_dir); //scan the directory and return its results into $contents
print '<h2>Directories</h2>
<ul>';
foreach($contents as $item) { //Iterate through the array and for each item...
//If the item is a directory AND it doesn't start with a . (which means the current one)...
if ((is_dir($search_dir.'/'.$item)) AND(substr($item, 0, 1) != '.')) {
print "<li>$item</li>\n"; //Print it
}
}
print '</ul>';
In short, it prints out an output of the directories inside the directory the script is running in.
. (you want to get the directories in a different directory), you'd fail, because it'll look for is_dir($item) (on the same directory as the script). By coincidence, the search dir and the current dir are the same.