CODEWITHSUNDEEP
phpajaxjquery
Alex
Alex

Reputation: 3257

How to resize image in this PHP script?

I'm experimenting with php script via ajax which uploads an array of images from this source.

While it works excellent I'm trying to enter php code which resizes images to 120px by width or height (whichever is larger). For my sanity please help how to update code:

$demo_mode = false;
$upload_dir = 'uploads/';
$allowed_ext = array('jpg','jpeg','png','gif');

if(strtolower($_SERVER['REQUEST_METHOD']) != 'post'){
    exit_status('Error! Wrong HTTP method!');
}

if(array_key_exists('pic',$_FILES) && $_FILES['pic']['error'] == 0 ){

    $pic = $_FILES['pic'];

    if(!in_array(get_extension($pic['name']),$allowed_ext)){
        exit_status('Only '.implode(',',$allowed_ext).' files are allowed!');
    }   

    if($demo_mode){

        // File uploads are ignored. We only log them.

        $line = implode('       ', array( date('r'), $_SERVER['REMOTE_ADDR'], $pic['size'], $pic['name']));
        file_put_contents('log.txt', $line.PHP_EOL, FILE_APPEND);

        exit_status('Uploads are ignored in demo mode.');
    }

    // Move the uploaded file from the temporary
    // directory to the uploads folder:

    if(move_uploaded_file($pic['tmp_name'], $upload_dir.$pic['name'])){
        exit_status('File was uploaded successfuly!');
    }

}

exit_status('Something went wrong with your upload!');

// Helper functions

function exit_status($str){
    echo json_encode(array('status'=>$str));
    exit;
}

function get_extension($file_name){
    $ext = explode('.', $file_name);
    $ext = array_pop($ext);
    return strtolower($ext);
}

Upvotes: 0

Views: 624

Answers (3)

Alex
Alex

Reputation: 3257

Well, I took an example of "promaty" from this LINK and call from loop:

<?php

$dir = "uploads/*.*";
$images = glob( $dir );

foreach( $images as $file ):
    $px = 120;
    $prefix = $px . "_";
    $dst = "uploads/" . $prefix . basename($file);
    $resized = image_resize($file, $dst, $px, $px);
    echo "<img src='" . $dst . "' />";
    echo "<p>" . basename($dst) . " </p>";
endforeach;

...and thanks for your time.

Upvotes: 0

Niclas Larsson
Niclas Larsson

Reputation: 1317

<?php
// The file
$filename = 'test.jpg';
$percent = 0.5;

// Content type
header('Content-Type: image/jpeg');

// Get new dimensions
list($width, $height) = getimagesize($filename);
$new_width = $width * $percent;
$new_height = $height * $percent;

// Resample
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);

// Output
imagejpeg($image_p, null, 100);

Find more at php.net

Upvotes: 1

Kuf
Kuf

Reputation: 17828

You can install imagemagick on your server:

<?php
function resize_image($file, $w, $h, $crop=FALSE) {
    $img = new Imagick($file);
    if ($crop) {
        $img->cropThumbnailImage($w, $h);
    } else {
        $img->thumbnailImage($w, $h, TRUE);
    }

    return $img;
}
resize_image(‘/path/to/some/image.jpg’, 150, 150);

Another way would be using the PHP-GD:

<?php
function resize_image($file, $w, $h, $crop=FALSE) {
    list($width, $height) = getimagesize($file);
    $r = $width / $height;
    if ($crop) {
        if ($width > $height) {
            $width = ceil($width-($width*($r-$w/$h)));
        } else {
            $height = ceil($height-($height*($r-$w/$h)));
        }
        $newwidth = $w;
        $newheight = $h;
    } else {
        if ($w/$h > $r) {
            $newwidth = $h*$r;
            $newheight = $h;
        } else {
            $newheight = $w/$r;
            $newwidth = $w;
        }
    }
    $src = imagecreatefromjpeg($file);
    $dst = imagecreatetruecolor($newwidth, $newheight);
    imagecopyresampled($dst, $src, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

    return $dst;
}

$img = resize_image(‘/path/to/some/image.jpg’, 150, 150);

Upvotes: 1

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