Crop Gambar dengan PHP

Halo semua para pembaca setia artikel ilmuwebsite. Tutorial kali ini akan bermain-main dengan image. Jadi jangan lupa siapkan dulu sebuah image untuk dijadikan kelinci percobaan :-D... Siapkan sebuah gambar dengan nama ?gambar1.jpg?. Letakkan gambar ini dalam satu folder dengan file PHPnya. Setelah itu buat script PHP dengan nama ?crop.php?. Jika sudah, ketikkan script berikut :

crop.php

<?php

// temtukan lebar, tinggi, file yang mau dicrop, format nama file, dan penempatan foto setelah di crop

function cropImage($nw, $nh, $source, $stype, $dest) {

??????????????? $size = getimagesize($source); // ukuran gambar

??????????????? $w = $size[0];

??????????????? $h = $size[1];

??????????????? switch($stype) { // format gambar

??????????????????????????????? case 'gif':

??????????????????????????????????????????????? $simg = imagecreatefromgif($source);

??????????????????????????????????????????????? break;

??????????????????????????????? case 'jpg':

??????????????????????????????????????????????? $simg = imagecreatefromjpeg($source);

??????????????????????????????????????????????? break;

??????????????????????????????? case 'png':

??????????????????????????????????????????????? $simg = imagecreatefrompng($source);

??????????????????????????????????????????????? break;

??????????????? }

??????????????? $dimg = imagecreatetruecolor($nw, $nh); // menciptakan image baru

??????????????? $wm = $w/$nw;

??????????????? $hm = $h/$nh;

??????????????? $h_height = $nh/2;

??????????????? $w_height = $nw/2;

??????????????? if($w> $h) {

??????????????????????????????? $adjusted_width = $w / $hm;

??????????????????????????????? $half_width = $adjusted_width / 2;

??????????????????????????????? $int_width = $half_width - $w_height;

??????????????????????????????? imagecopyresampled($dimg,$simg,-$int_width,0,0,0,$adjusted_width,$nh,$w,$h);

??????????????? } elseif(($w <$h) || ($w == $h)) {

??????????????????????????????? $adjusted_height = $h / $wm;

??????????????????????????????? $half_height = $adjusted_height / 2;

??????????????????????????????? $int_height = $half_height - $h_height;

??????????????????????????????? imagecopyresampled($dimg,$simg,0,-$int_height,0,0,$nw,$adjusted_height,$w,$h);

??????????????? } else {

??????????????????????????????? imagecopyresampled($dimg,$simg,0,0,0,0,$nw,$nh,$w,$h);

??????????????? }

??????????????????????????????? imagejpeg($dimg,$dest,100);

}

$gambar = "gambar1.jpg";

$gambar_crop = "gambar1crop.jpg";

// jalankan fungsi crop gambar

// lebar, tinggi, file yang di crop, format gambar, nama file setelah di crop

cropImage(225, 165, "$gambar", 'jpg', "$gambar_crop");

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print "<h2>Image sebelum di crop : <br> <img src=$gambar> <br><br>";

print "Image setelah di crop : <br> <img src=$gambar_crop>";

?>

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Selamat mencoba.........

?

Salam,

Ivan

Email 1 : ivan@ilmuwebsite.om

Email 2 : ivan_wen_piao@yahoo.co.id

Web : www.ivan.ilmuwebsite.com