png image copied to another image php -

i'm trying add png image onto image. problem have png image creating transparent background around instead of having background of other image.

here's image:

expected result:

this code:

<?php     $img_name = "image_" . date("u") . ".png";     $whoareyou_src = imagecreatefrompng('who-are-you.png');      create_image($img_name, $whoareyou_src);     print "<img src=". $img_name .">";      function  create_image($img_name, $whoareyou_src) {         $im = @imagecreate(800, 610) or die("cannot initialize new gd image stream");         $background_color = imagecolorallocate($im, 0, 128, 128);  // teal          // imagecopy ( resource $dst_im , resource $src_im , int $dst_x , int $dst_y , int $src_x , int $src_y , int $src_w , int $src_h )         $success = imagecopy($im, $whoareyou_src, 0, 0, 0, 0, imagesx($whoareyou_src), imagesy($whoareyou_src));         echo "image copy: " . $success . "<br>"; // testing          imagepng($im, $img_name);          imagedestroy($im);         imagedestroy($whoareyou_src);     }  ?> 

i thought of setting background transparent might help:

imagecolortransparent($whoareyou_src, imagecolorallocate($whoareyou_src, 0, 0, 0)); 

but did not change anything.

update

tried use imagecopyresampled , alpha settings still same result:

<?php     $img_name = "image_" . date("u") . ".png";     $whoareyou_src = imagecreatefrompng('who-are-you.png');      create_image($img_name, $whoareyou_src);     print "<img src=". $img_name .">";      function  create_image($img_name, $whoareyou_src) {         $im = @imagecreate(800, 610) or die("cannot initialize new gd image stream");         imagealphablending($im, false);         imagesavealpha($im,true);          $background_color = imagecolorallocate($im, 0, 128, 128);  // teal          $success = imagecopyresampled($im, $whoareyou_src, 0, 0, 0, 0, imagesx($whoareyou_src), imagesy($whoareyou_src), imagesx($whoareyou_src), imagesy($whoareyou_src));         echo "image copy: " . $success . "<br>";          imagepng($im, $img_name);          imagedestroy($im);         imagedestroy($whoareyou_src);     }  ?> 

try this...

create_image($img_name, $whoareyou_src); print "<img src=". $img_name .">";  function  create_image($img_name, $whoareyou_src) {     $im = @imagecreatetruecolor(800, 610) or die("cannot initialize new gd image stream");     imagealphablending($im, false);     imagesavealpha($im,true);      $background_color = imagecolorallocate($im, 0, 128, 128);  // teal      // imagecopy ( resource $dst_im , resource $src_im , int $dst_x , int $dst_y , int $src_x , int $src_y , int $src_w , int $src_h )     $success = imagecopyresampled($im, $whoareyou_src, 0, 0, 0, 0, imagesx($whoareyou_src), imagesy($whoareyou_src));     echo "image copy: " . $success . "<br>"; // testing      imagepng($im, $img_name);      imagedestroy($im);     imagedestroy($whoareyou_src); } 

?>