Extract data into array from foreach

Question

Please go easy on me, this is my first time and obviously I have no idea what I'm doing...

I am using the following script that I found online to upload files and write the upload information into a database, I would like to collect the $file_name information into another array to be used outside of this code block in an implode function. I've searched high and low but have been unsuccessful in my searching. I figured out how to print the $file_name(s) from inside the if statement but not outside of both it and the php block but I can't figure out how to make it into an array instead.

Any help would be greatly appreciated.

    <?php
if(isset($_FILES['files'])){
    $errors= array();
    foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){
        $file_name = $key.$_FILES['files']['name'][$key];
        $file_size =$_FILES['files']['size'][$key];
        $file_tmp =$_FILES['files']['tmp_name'][$key];
        $file_type=$_FILES['files']['type'][$key];
        $timestamp= date('Y-m-d G:i:s');
        if($file_size > 2097152){
            $errors[]='File size must be less than 2 MB';
        }       
        $query="INSERT into upload_data (FILE_NAME, FILE_SIZE, FILE_TYPE, timestamp) VALUES(:file_name,:file_size,:file_type, :timestamp)";
        $desired_dir="files";
        if(empty($errors)==true){
            if(is_dir($desired_dir)==false){
                mkdir("$desired_dir", 0700);        // Create directory if it does not exist
            }
            if(is_dir("$desired_dir/".$file_name)==false){
                move_uploaded_file($file_tmp,"files/".$file_name);
            }else{                                  //rename the file if another one exist
                $new_dir="files/".$file_name.time();
                 rename($file_tmp,$new_dir) ;               
            }
            $q = $dbo->prepare($query);     
            $q->execute(array(':file_name'=>$file_name,':file_size'=>$file_size,':file_type'=>$file_type, ':timestamp'=>$timestamp));

        }else{
                print_r($errors);
        }
    }
    if(empty($error)){
        echo "Success";
    }
}

?>

Answer 1

Set an array before the loop:

$file_name_array = array();

Put the following code on the line after $file_name.

$file_name_array[] = $file_name;

This will give you an array containing the contents on $file_name, and will add to the array on each pass with each one.

Then you can do whatever you wish with the array.

Answer 2

Declare an array:

$file_names();

Add this line inside loop after $file_name :

$file_names[] = $file_name;

This $file_names will give you name of all the files.

Answer 3

For your understanding (as you said you are new)

In PHP An array can be created using the array() language construct. It takes any number of comma-separated key => value pairs as arguments.

Example #1 A simple array

<?php
$array = array(
    "foo" => "bar",
    "bar" => "foo",
);

// as of PHP 5.4
$array = [
    "foo" => "bar",
    "bar" => "foo",
];

?>

Now for your concern you just have to put all chopped out data from the foreach loop into a new array as:

 <?php
if(isset($_FILES['files'])){
    $errors= array();
    $filename_array = array();
    foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){
        $file_name = $key.$_FILES['files']['name'][$key];
        $filename_array[] = $file_name;
          $file_size =$_FILES['files']['size'][$key];
    $file_tmp =$_FILES['files']['tmp_name'][$key];
    $file_type=$_FILES['files']['type'][$key];
    $timestamp= date('Y-m-d G:i:s');
    if($file_size > 2097152){
        $errors[]='File size must be less than 2 MB';
    }       
    $query="INSERT into upload_data (FILE_NAME, FILE_SIZE, FILE_TYPE, timestamp) VALUES(:file_name,:file_size,:file_type, :timestamp)";
    $desired_dir="files";
    if(empty($errors)==true){
        if(is_dir($desired_dir)==false){
            mkdir("$desired_dir", 0700);        // Create directory if it does not exist
        }
        if(is_dir("$desired_dir/".$file_name)==false){
            move_uploaded_file($file_tmp,"files/".$file_name);
        }else{                                  //rename the file if another one exist
            $new_dir="files/".$file_name.time();
             rename($file_tmp,$new_dir) ;               
        }
        $q = $dbo->prepare($query);     
        $q->execute(array(':file_name'=>$file_name,':file_size'=>$file_size,':file_type'=>$file_type, ':timestamp'=>$timestamp));

    }else{
            print_r($errors);
    }
}
if(empty($error)){
    echo "Success";
}
}

?>

Now in your second block get the file names as

foreach ($filename_array as $filename) {
    echo $filename;
}

Refer for understanding PHP Arrays