我需要帮助调整图像大小，我不知道如何放入
<?php
if (isset($_POST['newcover'])) {
////GET image uploading settings
$select_upload_options = mysql_query("SELECT * FROM covers_submit_options");
$uop = mysql_fetch_assoc($select_upload_options);
$poster = $uop['cover_who_post'];
$approve = $uop['cover_approve'];
$server = $uop['cover_server'];
$default_user = $uop['cover_default_user'];
$cover_title = $_POST['title'];
$cover_desc = $_POST['desc'];
$cover_desc2 = $_POST['desc2'];
$cover_date = $_POST['date'];
$cover_tags = $_POST['tags'];
$cover_okvir = $_POST['okvir'];
$cover_velicina = $_POST['velicina'];
$cover_image2 = $_POST['image2'];
$cover_category = $_POST['huge'];
if ($poster != 'user' && $_SESSION['userid'] == '') {
$poster_user = $default_user;
} else {
$poster_user = $_SESSION['userid'];
}
if ($cover_title == '') {
$post_error = '<div class="alert alert-danger"><h3>Unesite Ime i Prezme</h3></div>';
} elseif ($cover_category == '') {
$post_error = '<div class="alert alert-danger"><h3>Izaberite Grad ii Općinu</h3></div>';
} elseif ($cover_date == '') {
$post_error = '<div class="alert alert-danger"><h3>Unesite Datum-Godište Npr. 1965-2016</h3></div>';
} elseif ($cover_okvir == '') {
$post_error = '<div class="alert alert-danger"><h3>Izaberite Izgled Osmrtnice</h3></div>';
} elseif ($poster_user == '') {
$poster_user = '1';
} elseif ($_FILES['photo']['size'] == '1') {
$post_error = '<div class="alert alert-danger"><h3>Please Select Image</h3></div>';
} else {
$post_error = '';
}
if ($post_error == '') {
if ($server == 'amazon') {
////////UPLOAD TO AMAZON/////////////////////
include('includes/amazonUpload.php');
////////UPLOAD TO AMAZON/////////////////////
} else {
////////////REGULAR UPLOADER TO SERVER/////////
list($file, $error) = upload('photo', 'images/covers/', 'jpg,jpeg,gif,png');
list($width, $height, $type, $attr) = ('images/covers/' . $file);
////////////Da bi upload slike mogao da radi uklonio sam dio koda orginal kod je ovaj dolje getimagesize prije zagrade images/covers /////////
if ($width < 0 || $height < 0) {
$post_error = "<div class='alert alert-danger'><h3>The Cover is Small<br>Please note that the Minimum allowed hight is 300px and Minimum Width is 800px </h3></div>";
unlink('images/covers/' . $file);
} else {
$image = 'images/covers/' . $file;
}
////////////REGULAR UPLOADER TO SERVER/////////
$error = $post_error;
}
////Store Into Database
if (!$error) {
$string = $slug;
if (strlen($string) != mb_strlen($string, 'utf-8')) {
$slug = date("M-D-His");
} else {
$slug = preg_replace("/[^a-zA-Z0-9_'-]/", '', $cover_title);
//$slug = preg_replace('/'s+/', '-', $cover_title);
$slug = strtolower($slug);
}
$is_slug_exists = mysql_query("SELECT * FROM covers_posts WHERE post_slug = '$slug' ");
$slug_exsits = mysql_num_rows($is_slug_exists);
if ($slug_exsits != '0') {
$slug = $slug . '-' . date('sy');
} else {
$slug = $slug;
}
$cover_datum = date("d-m-Y");
$insert = mysql_query("INSERT INTO covers_posts VALUES ('',
'$cover_title',
'$cover_desc',
'$cover_desc2',
'$cover_date',
'$cover_tags',
'$cover_okvir',
'$cover_velicina',
'$slug',
'$image',
'$cover_image2',
'$cover_category',
'1',
'$poster_user',
'$approve',
'0',
'0',
'0',
'$cover_datum'
) ");
order_badge($poster_user);
$post_error = '<div class="alert alert-success"><h3>Uspješno Ste Dodali Osmrtnicu , Prebacit će vas za 5 sekundi<br>
Ukolko ste zastali <a href="osmrtnica-' . $slug . '.html">Kliknite Ovde</a>
</h3></div>';
$redir = 'osmrtnica-' . $slug . '.html';
redirect($redir, '5');
} else {
$post_error = '<div class="alert alert-danger"><h3>' . $error . '</h3></div>';
}
} else {
$post_error = $post_error;
}
$smarty->assign('UploadResult', $post_error);
}
好吧，我知道这是一个旧脚本，后来我在mysqli连接中更改了它。我阅读了关于上传和调整图像大小的手册，现在它是调整图像大小，但所有图像都是黑色
elseif ($cover_okvir == '') {
$post_error = '<div class="alert alert-danger"><h3>Izaberite Izgled Osmrtnice</h3></div>';
}
elseif ($poster_user == '') {
$poster_user = '1';
}else{
////////////REGULAR UPLOADER TO SERVER/////////
list($file,$error) = upload('photo','images/covers/','jpg,jpeg,gif,png');
list($width, $height, $type, $attr) = getimagesize('images/covers/'.$file);
$width = 140;
$height = 150;
////////////REGULAR UPLOADER TO SERVER/////////
$src = imagecreatefromstring('images/covers/'.$file);
$dst = imagecreatetruecolor($width,$height);
imagecopyresampled($dst,$src,0,0,0,0,$width,$height);
imagedestroy($src);
imagepng($dst,'images/covers/'.$file); // adjust format as needed
imagedestroy($dst);
}
$image = 'images/covers/'.$file;
enter code here