How to trim image with php? - php

Question

This is my index.php file, i have uploaded and moved image from tmp folder to image folder and it's working properly. but now i want to trim image on display, every picture should be display of same size, i have tried lots of way but it's not working.
Need for help!!
<?php
require_once('appvars.php');
include 'db_connect.php';
$sql = "SELECT * FROM gitarwar";
$data = mysqli_query($dbc, $sql);
echo "<table>";
while ($row = mysqli_fetch_array($data))
{
echo '<tr><td>';
echo '<strong>' . $row['Score'] . '</strong><br/>';
echo '<strong>Name:</strong>' . $row['Name'] . '<br/>';
echo '<strong>Datetime:</strong>' . $row['Datetime'] . '<br/>';
echo '<img src="' .GW_UPLOADPATH . $row['Screenshot'] . '" alt="Score image" />';
echo "</tr>";
}
echo"</table>";
mysqli_close($dbc);
?>

Answer 1

I had a similar task before. My job was to check the image, and if it is smaller than my $newWidth or $newHeight, it added.
$imageUrl = [PATH OR URL TO YOUR IMAGE FILE];
$imageContent = file_get_contents($imageUrl);
$im = imagecreatefromstring($imageContent);
$width = imagesx($im);
$height = imagesy($im);
$newwidth = 300;
$newheight = 300;
$output = imagecreatetruecolor($newwidth, $newheight);
imagealphablending($output, false);
$transparency = imagecolorallocatealpha($output, 0, 0, 0, 127);
imagefill($output, 0, 0, $transparency);
imagesavealpha($output, true);
imagecopymerge($output, $im, ($width < 300 ? (300 - $width) / 2 : 0), ($height < 300 ? (300 - $height) / 2 : 0), 0, 0, $width, $height, 100);
//Show the image
header('Content-Type: image/png');
imagepng($output); //You can save it with another parameter what is a path
imagedestroy($output);
imagedestroy($im);
You need to change this line:
imagecopymerge($output, $im, ($width < 300 ? (300 - $width) / 2 : 0), ($height < 300 ? (300 - $height) / 2 : 0), 0, 0, $width, $height, 100);
to your size.
It's actually not exactly what you want, but it could be a good starting point.

Answer 2

You can trim the image when uploading it, by using imagecreatefrom(jpeg|png|gif) function.
$file = "images/" . $_FILES['image']['name'];
$tmp_file = $_FILES['image']['tmp_name'];
$type = $_FILES['images']['type'];
if (move_uploaded_file($tmp_file, $file)) {
chmod($file, 0777);
// check the type of image, you can do this for other types too, just change the imagecreatefrom function to the type you want to save the image as
if ($type === 'image/jpeg') {
$jpeg = imagecreatefromjpeg($file);
$jpeg_width = imagesx($jpeg);
$jpeg_height = imagesy($jpeg);
$new_width = imagesx($jpeg) / 4; // Fix the width of the thumb nail images, change the width of image here
$new_height = imagesy($jpeg) / 4; // change the height of image here
//new image
$new_image = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($new_image, $jpeg, 0, 0, 0, 0, $new_width, $new_height, $jpeg_width, $jpeg_height);
imagejpeg($new_image, $thumb);
chmod($thumb, 0777);
}
}