How to flip image using php in CodeIgniter

Question

I am trying to do flip operation in CodeIgniter I have found a code for image flip in php using codeigniter libraries First I uploaded image to a path, here is the coding of controller for this purpose:

$config['upload_path'] = 'D:/xampp/htdocs/ImageTools/assets/images/pages/';
$config['allowed_types'] = 'gif|jpg|png|jpeg';
$this->load->library('image_lib');
$this->image_lib->initialize($config);
$this->image_lib->clear();
$this->load->library('upload',$config);
if(!$this->upload->do_upload()){
$errors = array('error' => $this->upload->display_errors());
$post_image='noimage.jpg';
}else{
$file_data = $this->upload->data();
$data['img'] = base_url().'assets/images/pages/'.$file_data['file_name'];
$this->load->view('pages/inverted',$data);

I tried to do the invert operation here but couldn't succeeded then tried to invert the uploaded image, done the coding in view file by passing this uploaded image to view:

<?php $img;?>
<?php
$this->image_lib->clear();
$config=array();
$config['image_library'] = 'gd2';
$config['source_image'] = $img;
$config['create_thumb'] = TRUE;
$config['rotation_angle'] = 'hor';
$this->load->library('image_lib');
$this->image_lib->initialize($config);
$this->load->library('upload',$config);
$this->image_lib->rotate();                    
if ( ! $this->image_lib->rotate())
{
echo $this->image_lib->display_errors();
}
if(!$this->upload->do_upload()){
$errors = array('error' => $this->upload->display_errors());
$post_image='noimage.jpg';
}
else{
$file_data = $this->upload->data();
$data = base_url().'/assets/images/pages/'.$file_data['file_name'];
}              
?>

Don't really know how to explain it better than the error message and [the manual](http://php.net/manual/en/function.imageflip.php) does. The first argument needs to be an image resource, while you're passing in a URL as a string. — Magnus Eriksson, Jul 03 '18 at 14:05
Pass an image resource as the first argument instead of a string. If you read the manual for the function, there's even an example on how. — Magnus Eriksson, Jul 03 '18 at 14:49
first off `D:/xampp/htdocs/ImageTools/assets/images/pages/` will never be valid in a server environment. there is a way to make it valid for all environments `./ImageTools/assets/images/pages/` and indeed you need to pass a resource. the issue with that is that you need to know which type of image you have ... png, jpg, .etc. It would be alot easier if you just user CI's included image library. — Alex, Jul 03 '18 at 23:08
@Alex I have edited the complete question please take a look. — mareena, Jul 04 '18 at 00:01
It is not working there are mistakes in the code that image src is not correct.Please check the code. how to display the rotated image — mareena, Jul 04 '18 at 10:41
@Alex can you tell me the right code for implementing image flip in php, I have seen the code on the website but don't know how to flip an image through this code? — mareena, Jul 04 '18 at 12:57

score 0 · Accepted Answer · answered Jul 04 '18 at 19:23

First off D:/xampp/htdocs/ImageTools/assets/images/pages/ will never be valid in a server environment. There is a way to make it valid for all environments like so:

$config['upload_path'] = './ImageTools/assets/images/pages/';

(there are other ways but this is the one in the CI docs)

If the folder ImageTools is actually imagetools then that needs to be used in the above example; Linux is case sensitive.

Therefore, following the docs, you can do:

$upload['upload_path'] = './ImageTools/assets/images/pages/';
$upload['allowed_types'] = 'gif|jpg|png';

$this->load->library('upload', $upload);

if (!$this->upload->do_upload('userfile')) {
    show_error($this->upload->display_errors());
}

$this->load->library('image_lib');

$config['image_library'] = 'gd2';
$config['source_image'] = $this->upload->data('full_path');
$config['rotation_angle'] = 'hor'; // or whatever

$this->image_lib->initialize($config);

if (!$this->image_lib->rotate()) {
    show_error($this->image_lib->display_errors());
}

$img_path = base_url() . '/assets/images/pages/' . $this->upload->data('file_name');

echo "<img src='{$img_path}' width='auto' height='200'>";

Perhaps. Start another question and since you are relatively new just make sure to follow stacks guidelines as downvotes and closings are commonplace. — Alex, Jul 06 '18 at 23:15
started already, link: https://stackoverflow.com/questions/51207172/how-to-load-data-to-a-particular-section-of-the-page-without-refreshing-the-whol/51207312?noredirect=1#comment89397973_51207312 — mareena, Jul 06 '18 at 23:18

How to flip image using php in CodeIgniter

1 Answers1