Php call to undefined function imagejpeg

Php – Fatal error: Call to undefined function: imagejpeg() on Heroku PHP. Fix

So, I am getting the following error whilst trying to upload images on my Heroku site (PHP).

 Fatal error: Call to undefined function: imagejpeg() 

It refers to the following line in my AmazonS3Handler.php file.

 //build the jpeg imagejpeg($destinationImage); 

Any ideas on how I could fix this?

Best Solution

I had GD lib installed and got the same error. The problem was in compiling without jpeg support. Here what you should do to make things work.

1. Install libjpeg

apt-get install libjpeg62-turbo-dev 

2. Configure PHP with jpeg support

./configure \ --with-gd --with-jpeg-dir=/usr/lib64 # other options 

3. Build PHP

make clean make make install 
Php – “Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP

Notice: Undefined variable

From the vast wisdom of the PHP Manual:

Relying on the default value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of working with uninitialized variables, however not in the case of appending elements to the uninitialized array. isset() language construct can be used to detect if a variable has been already initialized. Additionally and more ideal is the solution of empty() since it does not generate a warning or error message if the variable is not initialized.

No warning is generated if the variable does not exist. That means empty() is essentially the concise equivalent to !isset($var) || $var == false.

This means that you could use only empty() to determine if the variable is set, and in addition it checks the variable against the following, 0 , 0.0 , «» , «0» , null , false or [] .

$o = []; @$var = ["",0,null,1,2,3,$foo,$o['myIndex']]; array_walk($var, function($v) < echo (!isset($v) || $v == false) ? 'true ' : 'false'; echo ' ' . (empty($v) ? 'true' : 'false'); echo "\n"; >); 

Test the above snippet in the 3v4l.org online PHP editor

Although PHP does not require a variable declaration, it does recommend it in order to avoid some security vulnerabilities or bugs where one would forget to give a value to a variable that will be used later in the script. What PHP does in the case of undeclared variables is issue a very low level error, E_NOTICE , one that is not even reported by default, but the Manual advises to allow during development.

Ways to deal with the issue:

    Recommended: Declare your variables, for example when you try to append a string to an undefined variable. Or use isset() / !empty() to check if they are declared before referencing them, as in:

//Initializing variable $value = ""; //Initialization value; Examples //"" When you want to append stuff later //0 When you want to add numbers later //isset() $value = isset($_POST['value']) ? $_POST['value'] : ''; //empty() $value = !empty($_POST['value']) ? $_POST['value'] : ''; 
// Null coalesce operator - No need to explicitly initialize the variable. $value = $_POST['value'] ?? ''; 
set_error_handler('myHandlerForMinorErrors', E_NOTICE | E_STRICT) 
error_reporting( error_reporting() & ~E_NOTICE ) 

Note: It’s strongly recommended to implement just point 1.

Notice: Undefined index / Undefined offset

This notice appears when you (or PHP) try to access an undefined index of an array.

Ways to deal with the issue:

    Check if the index exists before you access it. For this you can use isset() or array_key_exists() :

//isset() $value = isset($array['my_index']) ? $array['my_index'] : ''; //array_key_exists() $value = array_key_exists('my_index', $array) ? $array['my_index'] : ''; 
list($a, $b) = array(0 => 'a'); //or list($one, $two) = explode(',', 'test string'); 

Two variables are used to access two array elements, however there is only one array element, index 0 , so this will generate:

$_POST / $_GET / $_SESSION variable

The notices above appear often when working with $_POST , $_GET or $_SESSION . For $_POST and $_GET you just have to check if the index exists or not before you use them. For $_SESSION you have to make sure you have the session started with session_start() and that the index also exists.

Also note that all 3 variables are superglobals and are uppercase.

Git – Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly

You have to upload your public key to Heroku:

heroku keys:add ~/.ssh/id_rsa.pub 

If you don’t have a public key, Heroku will prompt you to add one automatically which works seamlessly. Just use:

To clear all your previous keys do :

To display all your existing keys do :

The above did not seem to work for me. I had messed around with the HOME environment variable and so SSH was searching for keys in the wrong directory.

To ensure that SSH checks for the key in the correct directory do :

Which will display the following ( Sample ) lines

OpenSSH_4.6p1, OpenSSL 0.9.8e 23 Feb 2007 debug1: Connecting to heroku.com [50.19.85.156] port 22. debug1: Connection established. debug1: identity file /c/Wrong/Directory/.ssh/identity type -1 debug1: identity file /c/Wrong/Directory/.ssh/id_rsa type -1 debug1: identity file /c/Wrong/Directory/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version Twisted debug1: no match: Twisted debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_4.6 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: sending SSH2_MSG_KEXDH_INIT debug1: expecting SSH2_MSG_KEXDH_REPLY debug1: Host 'heroku.com' is known and matches the RSA host key. debug1: Found key in /c/Wrong/Directory/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Trying private key: /c/Wrong/Directory/.ssh/identity debug1: Trying private key: /c/Wrong/Directory/.ssh/id_rsa debug1: Trying private key: /c/Wrong/Directory/.ssh/id_dsa debug1: No more authentication methods to try. 

Permission denied (publickey).

From the above you could observe that ssh looks for the keys in the /c/Wrong/Directory/.ssh directory which is not where we have the public keys that we just added to heroku ( using heroku keys:add ~/.ssh/id_rsa.pub ) ( Please note that in windows OS ~ refers to the HOME path which in win 7 / 8 is C:\Users\UserName )

To view your current home directory do : echo $HOME or echo %HOME% ( Windows )

To set your HOME directory correctly ( by correctly I mean the parent directory of .ssh directory, so that ssh could look for keys in the correct directory ) refer these links :

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Fatal Error Call To Undefined Function Imagejpeg

Fatal Error Call To Undefined Function Imagejpeg

We have collected for you the most relevant information on Fatal Error Call To Undefined Function Imagejpeg, as well as possible solutions to this problem. Take a look at the links provided and find the solution that works. Other people have encountered Fatal Error Call To Undefined Function Imagejpeg before you, so use the ready-made solutions.

Fatal error: Call to undefined function: imagejpeg() on .

    https://stackoverflow.com/questions/19028793/fatal-error-call-to-undefined-function-imagejpeg-on-heroku-php-fix
    Teams. Q&A for Work. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

Fatal error: Call to undefined function imagejpeg() — JoomlArt

    https://www.joomlart.com/forums/topic/fatal-error-call-to-undefined-function-imagejpeg/
    Nov 25, 2007 · Fatal error: Call to undefined function imagejpeg() Forums Public Forums Extensions Fatal error: Call to undefined function imagejpeg() Viewing 6 posts — 1 through 6 (of 6 total)

Solved — Call to undefined function imagecreatefromjpeg

    https://www.tectut.com/2015/10/solved-call-to-undefined-function-imagecreatefromjpeg/
    Even if you are installed php with gd, error message ” undefined function imagecreatefromjpeg () ” may appear on php. specifically when installing fresh opencart web application you …

GD Problem — Call to undefined function imagejpeg() — PHP

    https://bytes.com/topic/php/answers/7067-gd-problem-call-undefined-function-imagejpeg
    Jul 17, 2005 · Call to undefined function imagejpeg() or Call to undefined function imagepng() PHP was build with —with-gd —with-zlib but I assume I will need more? phpinfo() says: gd GD Support enabled GD Version bundled (2.0.23 compatible) GIF Read Support enabled PNG Support enabled WBMP Support enabled XBM Support enabled Thanks, Jan

Call to undefined function imagejpeg() — Support — Local .

    https://localwp.com/community/t/call-to-undefined-function-imagejpeg/23036
    Nov 21, 2020 · GD Support enabled; GD Version: bundled (2.1.0 compatible) GIF Read Support: enabled: GIF Create Support: enabled: PNG Support: enabled: libPNG Version: 1.6.37: WBMP .

Moodle in English: Fatal error: Call to undefined function .

    https://moodle.org/mod/forum/discuss.php?d=31473
    Sep 27, 2005 · ¡ Hola ! mmm no creo verifique eso e inclusive recompile el PHP para que la tuviera Además si funciona el mapa que se pinta para ver de donde es la IP en la que se conecta el alumno.

[RESOLVED] Call to undefined function: imagecreatefromjpeg .

    https://board.phpbuilder.com/d/10312525-resolved-call-to-undefined-function-imagecreatefromjpeg-but-gd-is-enabled-in-php-set-up
    So it’s a valid JPEG image. It’s not a broken image because you aren’t getting a broken image icon (I may be wrong about that which is why I asked what the contents of the image file were.

PHP: imagecreatefromjpeg — Manual

    https://www.php.net/manual/en/function.imagecreatefromjpeg.php
    If imagecreatefromjpeg() fails with «PHP Fatal error: Call to undefined function: imagecreatefromjpeg()», it does NOT necessarily mean that you don’t have GD installed. If phpinfo() shows GD, but not JPEG support, then that’s the problem. You would think that —with-gd would do the right thing since it does check for the existance of libjpeg .

Call to undefined function imagepng() [#2382069] Drupal.org

    https://www.drupal.org/project/realistic_dummy_content/issues/2382069
    Nov 25, 2014 · Fatal error: Call to undefined function imagepng() in /path/to/drupal/sites/all/modules/contrib/devel/devel_generate/image.devel_generate.inc on line 91 Drush command terminated abnormally due to an unrecoverable error.

Fatal Error Call To Undefined Function Imagejpeg Fixes & Solutions

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