php image file upload and convert to base64 without saving image

Question

I know how to upload image file and save to other location by using the following code. However, I need to do in such a way that user upload image and automatically convert to base64 without saving that image in my location. How should I do?

<?php
//print_r($_FILES);
if(isset($_FILES['image']))
{
    $errors=array();
    $allowed_ext= array('jpg','jpeg','png','gif');
    $file_name =$_FILES['image']['name'];
 //   $file_name =$_FILES['image']['tmp_name'];
    $file_ext = strtolower( end(explode('.',$file_name)));


    $file_size=$_FILES['image']['size'];
    $file_tmp= $_FILES['image']['tmp_name'];
    echo $file_tmp;echo "<br>";

    $type = pathinfo($file_tmp, PATHINFO_EXTENSION);
    $data = file_get_contents($file_ext);
    $base64 = 'data:image/' . $type . ';base64,' . base64_encode($data);
    echo "Base64 is ".$base64;



    if(in_array($file_ext,$allowed_ext) === false)
    {
        $errors[]='Extension not allowed';
    }

    if($file_size > 2097152)
    {
        $errors[]= 'File size must be under 2mb';

    }
    if(empty($errors))
    {
       if( move_uploaded_file($file_tmp, 'images/'.$file_name));
       {
        echo 'File uploaded';
       }
    }
    else
    {
        foreach($errors as $error)
        {
            echo $error , '<br/>'; 
        }
    }
   //  print_r($errors);

}
?>


<form action="" method="POST" enctype="multipart/form-data">

<p>
    <input type="file" name="image" />
    <input type="submit" value="Upload">

</p>
</form>

What do you want to happen after the image is converted to base64? — Pekka
– Pekka, Commented Oct 12, 2013 at 15:03
actually, for project, I want to save that base64 into database instead of saving image file. — Khant Thu Linn
– Khant Thu Linn, Commented Oct 12, 2013 at 15:13
Use file_get_contents() to get the contents of the temporary uploaded file, base64_encode() to encode it, file_put_contents() to save the file. Although storing a base64 encoded representation of an image file sounds like a bad idea - with big files, you may run into RAM problems, and the resulting file will be 33% larger than the original. Why do that? — Pekka
– Pekka, Commented Oct 12, 2013 at 15:16
Yes. I need to test with that one. If I writing like this, I can't get base64 string. Can you please guide me? $type = pathinfo($file_tmp, PATHINFO_EXTENSION); $data = file_get_contents($file_ext); $base64 = 'data:image/' . $type . ';base64,' . base64_encode($data); echo "Base64 is ".$base64; — Khant Thu Linn
– Khant Thu Linn, Commented Oct 12, 2013 at 15:23
file_get_contents($file_ext); you're not using $file_tmp — Pekka
– Pekka, Commented Oct 12, 2013 at 15:47

halfpastfour.am · Accepted Answer · 2015-02-16 11:16:54Z

21

There is a mistake in your code:

$data = file_get_contents( $file_ext );

This should be:

$data = file_get_contents( $file_tmp );

This should solve your problem.

answered Feb 16, 2015 at 11:16

halfpastfour.am

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