How I can resize image after upload it in php - php

Question

I have a problem I can't solve it :(, I want to make code resizes image after upload it and save it in folder
my code:
<form method="post" action="" enctype="multipart/form-data">
<?php
$filename=$_FILES['f1']['name'];
$file=$_FILES['f1']['tmp_name'];
$ext=strtolower(end(explode(".",$filename)));
if ($ext=="jpg" or $ext=="jpeg" or $ext=="png" or $ext=="gif" ){
$newfilename= $t2.".".$ext;
copy ($file,"images/profiles/".$newfilename);
?>
<table dir="ltr" width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td align="right" width="84%">
<input name="f1" type="file" class="btn" id="f1" value=""/></td>
<td width="16%">image:</td>
</tr><tr>
</tr>
</table>
</form>

Answer 1

i have written a function to resize images in my Wordpress Plugin ..
Just copy this function to script and call it with the required parms .
<?php
/*
* Author : Azi Baloch
* Date Created : Saturday March 8 2014
*
*/
function CreateThumbs($src, $dst, $width, $height, $crop=0){
if(!list($w, $h) = getimagesize($src)) return "Invalid Picture Type";
$type = strtolower(substr(strrchr($src,"."),1));
if($type == 'jpeg') $type = 'jpg';
switch($type){
case 'bmp': $img = imagecreatefromwbmp($src); break;
case 'gif': $img = imagecreatefromgif($src); break;
case 'jpg': $img = imagecreatefromjpeg($src); break;
case 'png': $img = imagecreatefrompng($src); break;
default : return "Invalid Picture Type!";
}
// resize
if($crop){
if($w < $width or $h < $height) return "Picture is too small!";
$ratio = max($width/$w, $height/$h);
$h = $height / $ratio;
$x = ($w - $width / $ratio) / 2;
$w = $width / $ratio;
}
else{
if($w < $width and $h < $height) return "Picture is too small!";
$ratio = min($width/$w, $height/$h);
$width = $w * $ratio;
$height = $h * $ratio;
$x = 0;
}
$new = imagecreatetruecolor($width, $height);
if($type == "gif" or $type == "png"){
imagecolortransparent($new, imagecolorallocatealpha($new, 0, 0, 0, 127));
imagealphablending($new, false);
imagesavealpha($new, true);
}
imagecopyresampled($new, $img, 0, 0, $x, 0, $width, $height, $w, $h);
switch($type){
case 'bmp': imagewbmp($new, $dst); break;
case 'gif': imagegif($new, $dst); break;
case 'jpg': imagejpeg($new, $dst); break;
case 'png': imagepng($new, $dst); break;
}
return true;
} ?>

Answer 2

Instead You can use jquery to resize the image and then upload in the folder[File system].
$("#img_id").css({"width":"your value","height":"your value"});
and then store it using move_uploaded_file function

Answer 3

$rsr_org = imagecreatefromjpeg('path/to/image');
$rsr_scl = imagescale($rsr_org, new_width, new_height);
$newimg = imagejpeg($rsr_scl, 'path/to/new/image/image_name');
imagedestroy($rsr_org);
imagedestroy($rsr_scl);