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Need help resizing profile image in php

by man5
2 replies
I have two questions.

1. Right now, a user can upload a profile image in "profile" folder. If the user uploads a new profile image, it does that. However the old image is still stored in "profile" folder. How do I make sure that the old image is always deleted if a new image is uploaded?

2. I need to scale/resize the profile image. I can easily do it in css but that's not the right way. I have searched and found different ways to do it. However I am little lost on how it would fit in my code.

Below is my php code.

loggedin page
PHP Code:
<?php
    if (isset($_FILES['profile']) === true) {
        if    (empty($_FILES['profile']['name']) === true) {
            echo "Please choose a file!";
        } else {
            $allowed = array('jpg', 'jpeg', 'gif', 'png');
            
            $file_name = $_FILES['profile']['name'];
            $file_extn = strtolower(end(explode('.', $file_name)));
            $file_temp = $_FILES['profile']['tmp_name'];
            
            if (in_array($file_extn, $allowed) === true) {
                change_profile_image($session_user_id, $file_temp, $file_extn);
                header ('Location: index.php');
                exit();
            } else {
                echo "Incorrect file type. Allowed: ";
                echo implode(', ', $allowed);
            }
        }
    }
    if (empty($user_data['Profile']) === false) {
        echo '<img src="', $user_data['Profile'], '" alt="', $user_data['Name'], '\'s Profile Image">';
    }
    ?>
Function for loggedin page
PHP Code:
function change_profile_image($user_id, $file_temp, $file_extn) {
    $file_path = 'images/profile/' . substr(md5(time()), 0, 10) . '.' . $file_extn;
    move_uploaded_file($file_temp, $file_path);
    mysql_query("UPDATE users SET Profile = '" . mysql_real_escape_string($file_path) . "' WHERE user_id = " . (int)$user_id);
} 

So how do i go on about adding the image resize code?
#image #php #profile #resizing
  • Profile picture of the author man5
    Here is the updated function. I was following a tutorial that does the resizing. Though it doesn't work for me. Perhaps you can see what's wrong with it.

    PHP Code:
    function change_profile_image($user_id, $file_temp, $file_extn) {
            $file_path = 'images/profile/' . substr(md5(time()), 0, 10) . '.' . $file_extn;
            move_uploaded_file($file_temp, $file_path);
        
        if (    file_exists($profile) === true) { 
                $src_size = getimagesize($profile);
            
            if (    $src_size['mime'] === 'image/jpg') {
                    $src_img = imagecreatefromjpg($profile);    
            } else if (    $src_size['mime'] === 'image/jpeg') {
                    $src_img = imagecreatefromjpeg($profile); 
            }    else if (    $src_size['mime'] === 'image/gif') {
                    $src_img = imagecreatefromgif($profile); 
            }    else if (    $src_size['mime'] === 'image/png') {
                    $src_img = imagecreatefrompng($profile); 
            } else {
                    $src_img = false;
            }
            if (    $src_img !== false) {
                    $thumb_width = 200;
                
                if (    $src_size[0] <= $thumb_width) {
                        $thumb = $src_img;
                } else {
                        $new_size[0] = $thumb_width;
                        $new_size[1] = ($src_size[1] / $src_size[0]) * $thumb_width;
                    
                        $thumb = imagecreatetruecolor($new_size[0], $new_size[1]);
                        imagecopyresampled($thumb, $src_img, 0, 0, 0, 0, $new_size[0], $new_size[1], $src_size[0], $src_size[1]);
                }
                
            }
        }
            mysql_query("UPDATE users SET Profile = '" . mysql_real_escape_string($file_path) . "' WHERE user_id = " . (int)$user_id);
    } 
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  • Profile picture of the author man5
    Never mind, I found a different way to make this work. However I am still looking for a way to replace the existing profile image with new one.
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