87-UploadingFiles.php

<?php
/**
 * Created by PhpStorm.
 * User: Alyssa
 * Date: 1/16/2016
 * Time: 1:12 PM
 */

$max_size = 30000; //30KB
$location = 'uploads/'; //where the file is going

if (isset($_POST['submit'])) { //checking for anythiing will break the code
    $name = $_FILES['file']['name']; //file name
    $size = $_FILES['file']['size']; //file size
    $type = $_FILES['file']['type']; //file type
    $tmp_name = $_FILES['file']['tmp_name']; //temp location on server


    if(checkType($name, $type) && checkSize($size, $max_size)){
            if (isset($name)) {
                save_file($tmp_name, $name, $location); //call my function
            }
    }
} else {
    echo 'Please select a file:';
}
function checkType($name, $type){
    //$extension = strtolower(substr($name, strpos($name, '.') + 1)); //get the extension
    $extension = pathinfo($name, PATHINFO_EXTENSION); //better way to get extension
    if (!empty($name)) {
        if (($extension == 'jpg' || $extension == 'png') && ($type == 'image/jpeg' || $type == 'image/png')) {
            return true;
        } else{
            echo 'That is not a jpg or png';
            return false;
        }
    }
}

function checkSize($size, $max_size){
    if($size <= $max_size){
        return true;
    } else{
        echo 'File is too large. Max size in 30KB.';
        return false;
    }
}

function fileExists($name){
    $filename = rand(1000,9999).md5($name).rand(1000, 9999);
    echo $filename;
    return false;
}

function save_file($tmp_name, $name, $location){
    $og_name = $name;

    //so long as the name is in existance - loop to check new name after it is generated
    while (file_exists('uploads/' . $name)) {
        echo 'File already exists. Generating name.<br/>';
        $rand = rand(10000, 99999);
        $name = $rand . '.' . pathinfo($name, PATHINFO_EXTENSION); //create new name
    }

    if (move_uploaded_file($tmp_name, $location . $name)) {
        echo 'Success! ' . $og_name . ' was uploaded';
        if(!($og_name==$name)){ //if original name != name
            echo ' and renamed to '.$name.'.<br/>';
        } else{
            echo '.';
        }
    } else {
        echo 'ERROR!';
    }
}
?>

<form action="" method="POST" enctype="multipart/form-data">
    <input type="file" name="file"/>
    <input type="submit" name="submit" value="Submit"/>

</form>