PHP codes for uploading image on the server

[phplaracast]

One of the difficult topics in web programming is image upload (i.e how to write codes that uploads content like images to the server) and in this tutorial, I will show you how to go about it…
NOTE THIS TUTORIAL IS FOR THOSE WHO HAVE EXPERIENCE IN WEB PROGRAMMING AND PHP.

create a new script and name it create_user.html
Images Are Just Files

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First Name:
Last Name:
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Twitter Handle:
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Bio:

`

Now create the PHP script where the the HTML codes will submit.

`<?php

require_once ‘…/scripts/app_config.php’;
require_once ‘…/scripts/database_connection.php’;

$upload_dir = HTDOCS . “uploads/profile_pics/”;
$image_fieldname = “user_pic”;

// Potential PHP upload errors
$php_errors = array(1 => ‘Maximum file size in php.ini exceeded’,
2 => ‘Maximum file size in HTML form exceeded’,
3 => ‘Only part of the file was uploaded’,
4 => ‘No file was selected to upload.’);

$first_name = trim($_REQUEST[‘first_name’]);
$last_name = trim($_REQUEST[‘last_name’]);
$email = trim($_REQUEST[‘email’]);
$bio = trim($_REQUEST[‘bio’]);
$facebook_url = str_replace(“facebook.org”, “■■■■■■■■■■■■”,
trim($_REQUEST[‘facebook_url’]));
$position = strpos($facebook_url, “■■■■■■■■■■■■”);
if ($position === false) {
$facebook_url = “http://www.■■■■■■■■■■■■/” . $facebook_url;
}

$twitter_handle = trim($_REQUEST[‘twitter_handle’]);
$twitter_url = “http://www.■■■■■■■■■■■/”;
$position = strpos($twitter_handle, “@”);
if ($position === false) {
$twitter_url = $twitter_url . $twitter_handle;
} else {
$twitter_url = $twitter_url . substr($twitter_handle, $position + 1);
}

// Make sure we didn’t have an error uploading the image
($_FILES[$image_fieldname][‘error’] == 0)
or handle_error(“the server couldn’t upload the image you selected.”,
$php_errors[$_FILES[$image_fieldname][‘error’]]);

// Is this file the result of a valid upload?
@is_uploaded_file($_FILES[$image_fieldname][‘tmp_name’])
or handle_error(“you were trying to do something naughty. Shame on you!”,
“Uploaded request: file named " .
”’{$_FILES[$image_fieldname][‘tmp_name’]}’");

// Is this actually an image?
@getimagesize($_FILES[$image_fieldname][‘tmp_name’])
or handle_error(“you selected a file for your picture " .
“that isn’t an image.”,
”{$_FILES[$image_fieldname][‘tmp_name’]} " .
“isn’t a valid image file.”);

// Name the file uniquely
$now = time();
while (file_exists($upload_filename = $upload_dir . $now .
’-’ .
$_FILES[$image_fieldname][‘name’])) {
$now++;
}

// Finally, move the file to its permanent location
@move_uploaded_file($_FILES[$image_fieldname][‘tmp_name’], $upload_filename)
or handle_error("we had a problem saving your image to " .
“its permanent location.”,
"permissions or related error moving " .
“file to {$upload_filename}”);

$insert_sql = “INSERT INTO users (first_name, last_name, email, bio,” .
“facebook_url, twitter_handle,” .
“user_pic_path) " .
“VALUES (’{$first_name}’, ‘{$last_name}’, ‘{$email}’, ‘{$bio}’, " .
”’{$facebook_url}’, ‘{$twitter_handle}’, " .
”’{$upload_filename}’);";

// Insert the user into the database
mysql_query($insert_sql)
or die(mysql_error());

// Redirect the user to the page that displays user information
header(“Location: show_user.php?user_id=” . mysql_insert_id());
exit();
?>
`

[phplaracast]

I dont know why the html codes are not displaying