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Thursday, 1 October 2015

imagecreatefrompng - Create a new image from file or URL - PHP

imagecreatefrompng - Create a new image from file or URL - PHP

resource imagecreatefrompng ( string $filename )
Create a new image from file or URL
imagecreatefrompng() returns an image identifier representing the image obtained from the given filename

<?php

function LoadPNG($imgname)
{
    
/* Attempt to open */
    
$im = @imagecreatefrompng($imgname);

    
/* See if it failed */
    
if(!$im)
    {
        
/* Create a blank image */
        
$im  imagecreatetruecolor(15030);
        
$bgc imagecolorallocate($im255255255);
        
$tc  imagecolorallocate($im000);

        
imagefilledrectangle($im0015030$bgc);

        
/* Output an error message */
        
imagestring($im155'Error loading ' $imgname$tc);
    }

    return 
$im;
}
header('Content-Type: image/png');$img LoadPNG('bogus.image');imagepng($img);imagedestroy($img);?>


PHPで画像を縮小してアップロードする
Make sure GD Library is enabled and "PNG Support" is must enabled in GD Library.

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