<?php
// Изменение размера изображения
class SimpleImage {
private $image, $image_type;
public $width, $height;
function __construct($filename = false) {
if ($filename) {
$this->load($filename);
}
}
public function load($filename) {
$image_info = getimagesize($filename);
$this->image_type = $image_info[2];
if ($this->image_type == IMAGETYPE_JPEG) {
$this->image = imagecreatefromjpeg($filename);
} elseif ($this->image_type == IMAGETYPE_GIF) {
$this->image = imagecreatefromgif($filename);
} elseif ($this->image_type == IMAGETYPE_PNG) {
$this->image = imagecreatefrompng($filename);
}
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
}
public function save($filename, $image_type = IMAGETYPE_JPEG, $compression = 75, $permissions = null) {
if ($image_type == IMAGETYPE_JPEG) {
imagejpeg($this->image, $filename, $compression);
} elseif ($image_type == IMAGETYPE_GIF) {
imagegif($this->image, $filename);
} elseif ($image_type == IMAGETYPE_PNG) {
imagepng($this->image, $filename);
}
if ($permissions != null) {
chmod($filename, $permissions);
}
}
public function output($image_type = IMAGETYPE_PNG) {
if ($image_type == IMAGETYPE_JPEG) {
header("Content-type: image/jpeg");
imagejpeg($this->image);
} elseif ($image_type == IMAGETYPE_GIF) {
header("Content-type: image/gif");
imagegif($this->image);
} elseif ($image_type == IMAGETYPE_PNG) {
header("Content-type: image/png");
imagepng($this->image);
}
}
public function resizeToHeight($height) {
$ratio = $height / $this->height;
$width = $this->width * $ratio;
$this->resize($width, $height);
}
public function resizeToWidth($width) {
$ratio = $width / $this->width;
$height = $this->height * $ratio;
$this->resize($width, $height);
}
public function scale($scale) {
$width = $this->width * $scale / 100;
$height = $this->height * $scale / 100;
$this->resize($width, $height);
}
public function resize($width, $height) {
$new_image = imagecreatetruecolor($width, $height);
imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->width, $this->height);
$this->image = $new_image;
}
}