How to add WP variables to GD imagepng

1

I'm trying to add a logged in user ID (wordpress) to a GD image.

When I use a constant it displays the png correctly, when calling a variable it shows a broken image link.

The call is done through a shortcode calling:

/* ================== GET PIC USER ================== */

function get_pic_user($atts) {

$myphp_folder = get_stylesheet_directory_uri() . '/make-pic.php';

$html = '<img src="'.$myphp_folder.'" alt="Image created by a PHP script" width="1000" height="768" align="middle">';

return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

The php behind the make-pic.php is:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

header("Content-type: image/png");

$color = imagecolorallocate($im, 51, 51, 51);

imagestring($im, 21, 500, 350, $string_user, $color);

imagepng($im);

imagedestroy($im);

exit;

So this works:

<?php

$string_user = 15;

$im = imagecreatefrompng("../my_user_pic.png");

and this doesn't:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

Any suggestions would be appreciated.

Thank you

php wordpress gd php-gd

share|improve this question

edited Nov 19 '18 at 16:47

asked Nov 19 '18 at 16:25

Duttch

113

• 
  
  
  

  
  

  
  
  
  
  
  

  
  On debugging the issue further, I've notice the following: Its giving a FATAL ERROR: Uncaught Error: Call to undefined function wp_get_curent_user() in .....
  – Duttch
  Nov 20 '18 at 20:03
  
  
  

  
  
  
  

add a comment | 

1

I'm trying to add a logged in user ID (wordpress) to a GD image.

When I use a constant it displays the png correctly, when calling a variable it shows a broken image link.

The call is done through a shortcode calling:

/* ================== GET PIC USER ================== */

function get_pic_user($atts) {

$myphp_folder = get_stylesheet_directory_uri() . '/make-pic.php';

$html = '<img src="'.$myphp_folder.'" alt="Image created by a PHP script" width="1000" height="768" align="middle">';

return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

The php behind the make-pic.php is:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

header("Content-type: image/png");

$color = imagecolorallocate($im, 51, 51, 51);

imagestring($im, 21, 500, 350, $string_user, $color);

imagepng($im);

imagedestroy($im);

exit;

So this works:

<?php

$string_user = 15;

$im = imagecreatefrompng("../my_user_pic.png");

and this doesn't:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

Any suggestions would be appreciated.

Thank you

php wordpress gd php-gd

share|improve this question

edited Nov 19 '18 at 16:47

asked Nov 19 '18 at 16:25

Duttch

113

• 
  
  
  

  
  

  
  
  
  
  
  

  
  On debugging the issue further, I've notice the following: Its giving a FATAL ERROR: Uncaught Error: Call to undefined function wp_get_curent_user() in .....
  – Duttch
  Nov 20 '18 at 20:03
  
  
  

  
  
  
  

add a comment | 

1

1

1

I'm trying to add a logged in user ID (wordpress) to a GD image.

When I use a constant it displays the png correctly, when calling a variable it shows a broken image link.

The call is done through a shortcode calling:

/* ================== GET PIC USER ================== */

function get_pic_user($atts) {

$myphp_folder = get_stylesheet_directory_uri() . '/make-pic.php';

$html = '<img src="'.$myphp_folder.'" alt="Image created by a PHP script" width="1000" height="768" align="middle">';

return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

The php behind the make-pic.php is:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

header("Content-type: image/png");

$color = imagecolorallocate($im, 51, 51, 51);

imagestring($im, 21, 500, 350, $string_user, $color);

imagepng($im);

imagedestroy($im);

exit;

So this works:

<?php

$string_user = 15;

$im = imagecreatefrompng("../my_user_pic.png");

and this doesn't:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

Any suggestions would be appreciated.

Thank you

php wordpress gd php-gd

share|improve this question

edited Nov 19 '18 at 16:47

asked Nov 19 '18 at 16:25

Duttch

113

I'm trying to add a logged in user ID (wordpress) to a GD image.

When I use a constant it displays the png correctly, when calling a variable it shows a broken image link.

The call is done through a shortcode calling:

/* ================== GET PIC USER ================== */

function get_pic_user($atts) {

$myphp_folder = get_stylesheet_directory_uri() . '/make-pic.php';

$html = '<img src="'.$myphp_folder.'" alt="Image created by a PHP script" width="1000" height="768" align="middle">';

return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

The php behind the make-pic.php is:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

header("Content-type: image/png");

$color = imagecolorallocate($im, 51, 51, 51);

imagestring($im, 21, 500, 350, $string_user, $color);

imagepng($im);

imagedestroy($im);

exit;

So this works:

<?php

$string_user = 15;

$im = imagecreatefrompng("../my_user_pic.png");

and this doesn't:

<?php

$user = wp_get_current_user();

$string_user = $user->id;

$im = imagecreatefrompng("../my_user_pic.png");

Any suggestions would be appreciated.

Thank you

php wordpress gd php-gd

php wordpress gd php-gd

share|improve this question

edited Nov 19 '18 at 16:47

asked Nov 19 '18 at 16:25

Duttch

113

share|improve this question

edited Nov 19 '18 at 16:47

asked Nov 19 '18 at 16:25

Duttch

113

share|improve this question

share|improve this question

edited Nov 19 '18 at 16:47

edited Nov 19 '18 at 16:47

edited Nov 19 '18 at 16:47

asked Nov 19 '18 at 16:25

Duttch

113

asked Nov 19 '18 at 16:25

Duttch

113

asked Nov 19 '18 at 16:25

Duttch

113

113

• 
  
  
  

  
  

  
  
  
  
  
  

  
  On debugging the issue further, I've notice the following: Its giving a FATAL ERROR: Uncaught Error: Call to undefined function wp_get_curent_user() in .....
  – Duttch
  Nov 20 '18 at 20:03
  
  
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  

  
  
  
  
  
  

  
  On debugging the issue further, I've notice the following: Its giving a FATAL ERROR: Uncaught Error: Call to undefined function wp_get_curent_user() in .....
  – Duttch
  Nov 20 '18 at 20:03
  
  
  

  
  
  
  

On debugging the issue further, I've notice the following: Its giving a FATAL ERROR: Uncaught Error: Call to undefined function wp_get_curent_user() in .....
– Duttch
Nov 20 '18 at 20:03

On debugging the issue further, I've notice the following: Its giving a FATAL ERROR: Uncaught Error: Call to undefined function wp_get_curent_user() in .....
– Duttch
Nov 20 '18 at 20:03

add a comment | 

1 Answer
1

active

oldest

votes

0

After adding several REQUIRE and other solutions issues still manifested. A working solution that I came up with was to add the IMAGEPNG just inline with code, however using a OB_START / OB_GET_CLEAN. The following works:

The image is still called from the page with a shortcode [display_get_pic_user]. The code behind it is:

function get_pic_user() {

    $user = wp_get_current_user();

    $string_user = $user->id;

    $im = imagecreatefrompng("../my_user_pic.png");

    $color = imagecolorallocate($im, 51, 51, 51);

    imagestring($im, 21, 500, 350, $string_user, $color);

    ob_start(); 

        imagepng($im);

    $rawImageBytes = ob_get_clean();

    $html = "<img src='data:image/png;base64," . base64_encode( $rawImageBytes ) . "' align=middle/>";

    imagedestroy($im);

    return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

share|improve this answer

edited Nov 21 '18 at 19:05

answered Nov 21 '18 at 17:17

Duttch

113

add a comment | 

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

active

oldest

votes

active

oldest

votes

0

After adding several REQUIRE and other solutions issues still manifested. A working solution that I came up with was to add the IMAGEPNG just inline with code, however using a OB_START / OB_GET_CLEAN. The following works:

The image is still called from the page with a shortcode [display_get_pic_user]. The code behind it is:

function get_pic_user() {

    $user = wp_get_current_user();

    $string_user = $user->id;

    $im = imagecreatefrompng("../my_user_pic.png");

    $color = imagecolorallocate($im, 51, 51, 51);

    imagestring($im, 21, 500, 350, $string_user, $color);

    ob_start(); 

        imagepng($im);

    $rawImageBytes = ob_get_clean();

    $html = "<img src='data:image/png;base64," . base64_encode( $rawImageBytes ) . "' align=middle/>";

    imagedestroy($im);

    return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

share|improve this answer

edited Nov 21 '18 at 19:05

answered Nov 21 '18 at 17:17

Duttch

113

add a comment | 

0

After adding several REQUIRE and other solutions issues still manifested. A working solution that I came up with was to add the IMAGEPNG just inline with code, however using a OB_START / OB_GET_CLEAN. The following works:

The image is still called from the page with a shortcode [display_get_pic_user]. The code behind it is:

function get_pic_user() {

    $user = wp_get_current_user();

    $string_user = $user->id;

    $im = imagecreatefrompng("../my_user_pic.png");

    $color = imagecolorallocate($im, 51, 51, 51);

    imagestring($im, 21, 500, 350, $string_user, $color);

    ob_start(); 

        imagepng($im);

    $rawImageBytes = ob_get_clean();

    $html = "<img src='data:image/png;base64," . base64_encode( $rawImageBytes ) . "' align=middle/>";

    imagedestroy($im);

    return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

share|improve this answer

edited Nov 21 '18 at 19:05

answered Nov 21 '18 at 17:17

Duttch

113

add a comment | 

0

0

0

After adding several REQUIRE and other solutions issues still manifested. A working solution that I came up with was to add the IMAGEPNG just inline with code, however using a OB_START / OB_GET_CLEAN. The following works:

The image is still called from the page with a shortcode [display_get_pic_user]. The code behind it is:

function get_pic_user() {

    $user = wp_get_current_user();

    $string_user = $user->id;

    $im = imagecreatefrompng("../my_user_pic.png");

    $color = imagecolorallocate($im, 51, 51, 51);

    imagestring($im, 21, 500, 350, $string_user, $color);

    ob_start(); 

        imagepng($im);

    $rawImageBytes = ob_get_clean();

    $html = "<img src='data:image/png;base64," . base64_encode( $rawImageBytes ) . "' align=middle/>";

    imagedestroy($im);

    return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

share|improve this answer

edited Nov 21 '18 at 19:05

answered Nov 21 '18 at 17:17

Duttch

113

After adding several REQUIRE and other solutions issues still manifested. A working solution that I came up with was to add the IMAGEPNG just inline with code, however using a OB_START / OB_GET_CLEAN. The following works:

The image is still called from the page with a shortcode [display_get_pic_user]. The code behind it is:

function get_pic_user() {

    $user = wp_get_current_user();

    $string_user = $user->id;

    $im = imagecreatefrompng("../my_user_pic.png");

    $color = imagecolorallocate($im, 51, 51, 51);

    imagestring($im, 21, 500, 350, $string_user, $color);

    ob_start(); 

        imagepng($im);

    $rawImageBytes = ob_get_clean();

    $html = "<img src='data:image/png;base64," . base64_encode( $rawImageBytes ) . "' align=middle/>";

    imagedestroy($im);

    return $html;

}

add_shortcode( 'display_get_pic_user', 'get_pic_user' );

share|improve this answer

edited Nov 21 '18 at 19:05

answered Nov 21 '18 at 17:17

Duttch

113

share|improve this answer

share|improve this answer

edited Nov 21 '18 at 19:05

edited Nov 21 '18 at 19:05

edited Nov 21 '18 at 19:05

answered Nov 21 '18 at 17:17

Duttch

113

answered Nov 21 '18 at 17:17

Duttch

113

answered Nov 21 '18 at 17:17

Duttch

113

113

add a comment | 

add a comment | 

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Please pay close attention to the following guidance:

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But avoid …

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• Making statements based on opinion; back them up with references or personal experience.

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