How to build an indexed array of .html filenames that exist in a directory?

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I am using this php code to get all html-files in the given directory:

$dirpath = ".....";
$filelist = preg_grep('~\.(html)$~', scandir($dirpath));

Now I want to get a specific element in the array, for example:

echo $filelist[0];

This fails. In my directory there are 52 files, and count($filelist) returns '52', but to get the first element I need to use echo $filelist[3]; The last item gets addresses by the index 54. What is this? Why do I can't adress them with index 0-51?

Edit: Possible duplicate only explains the shift of 2 indexes, what is the third? However: array_values solved the problem.

Use array_values() function to reset the numeric index to start from 0.

Try:

$dirpath = ".....";
$filelist = array_values(preg_grep('~\.(html)$~', scandir($dirpath)));

// print the first value
echo $filelist[0];

(html)$~', scandir($dirpath)); Now I want to get a specific element in the array, for example: echo $filelist[0]; This fails. In my directory there are 52 files, and  Specifies the directory to be scanned. order. Optional. Specifies the sorting order. Default sort order is alphabetical in ascending order (0). Set to SCANDIR_SORT_DESCENDING or 1 to sort in alphabetical descending order, or SCANDIR_SORT_NONE to return the result unsorted. context. Optional.

Those are the current (.) and parent (..) directories. They are present in all directories, and are used to refer to the directory itself and its direct parent. Why is it whenever I use scandir() I receive periods at the beginning of the array?

We'll see whether it's .html or .jpeg, or whatever it may be. This is what extname We want the first one in the array, so that will be 0. We'll end this with Here, we were checking to see whether it was a file or if it was a directory. If it was a file, If there's no fileName, it will automatically load index.html and then we'll just say  Returns an array of files and directories from the directory . The directory that will be scanned. By default, the sorted order is alphabetical in ascending order. If the optional sorting_order is set to SCANDIR_SORT_DESCENDING, then the sort order is alphabetical in descending order. If it is set to SCANDIR_SORT_NONE then the result is unsorted.

Just use

$filelist = array_values($filelist);

Your function is cherry picking the items from an already indexed array, so the keys are not in sequence.

The scandir() function returns an array of files and directories of the specified directory. Syntax. scandir(directory, order, context). Parameter Values. Parameter​  1. Declaring an Array and Assigning values. In bash, array is created automatically when a variable is used in the format like, name[index]=value. name is any name for an array; index could be any number or expression that must evaluate to a number greater than or equal to zero.You can declare an explicit array using declare -a arrayname.

Using scandir() then applying a regex filter, then re-indexing is an inefficient approach, when glob() can deliver what you want in one call.

The following will generate an array of only .html files.

If you want to see the dirpath prepended to the filename:

$filelist = glob($dirpath . "*.html");  // you may need to add a slash before the filename

If you want to see only the filenames:

chdir($dirpath);
$filelist = glob("*.html");

Although you can use any characters for file names, we strongly recommend but not all Web browsers require an .html extension for files for Web pages. A directory file in any operating system consists of an array of directory entries, The inode number is four bytes long and is an index value for an array on the disk. This MATLAB function builds a full file specification from the specified folder and file names.

Make an index file ( .index.php , starting with the dot, really) which <!doctype html> <html> <head> <meta charset="UTF-8"> <title>Directory of files function findexts ($filename) { $filename=strtolower($filename); $exts=split("[/\\.] Loops through the array of files for($index=0; $index < $indexCount;  To assign a value to a variable, we use the “=” operator. To display the value of a variable, simply enter the variable. The following commands assign a value to a variable and then verify it: $var1 = 777 $var1. You can perform arithmetic operations over numbers: $var1 = 777 $var2 = 333 $var3 = $var1 + $var2 $var3.

An option for SCANDIR_SORT_NONE behavior did not exist prior to PHP 5.4.0. A URL can be used as a filename with this function if the fopen wrappers have been enabled. See fopen() I wanted to create an array of my directory structure recursively. foreach ($aFilter as $filter) break; // we don't know how it's indexed Summary: A quick Perl tip on how to list all files in a directory that match a given filename pattern, i.e., using the Perl filename "glob" pattern-matching syntax. As a quick tip today, here's some sample Perl code that prints a listing of every file in the current directory that ends with the filename extension .html :

Returns TRUE if the file or directory specified by filename exists; FALSE otherwise. Tells whether the filename is a regular file; file() - Reads entire file into an array Don't forget this one, since it can make your file_exists() behave unexpectedly - probably at production time ;) $url="http://www.somewhere.org/​index.htm"; The array_diff() function returns an array of elements that exist in one array but not in any other arrays to which it is compared. T You refer to the values in a multidimensional indexed array by including two sets of brackets, one which refers to the row and one which refers to the column.

Comments
  • Possible duplicate of Why is it whenever I use scandir() I receive periods at the beginning of the array?
  • $filelist = array_values(array_diff(scandir($dirpath), ['.','..'])); For Example It's probably a bad practice to mix file types in the same Dir, such as .html and .css in the same place.
  • @ArtisticPhoenix glob() is the one-call solution.
  • @mickmackusa - I know what it is ... but strangely I never used it before. I don't use scandir much (not in the last 5 years). Mainly I use SPL classes.
  • What question are you answering?