将图像从一个变量调整为另一个变量

时间:2011-07-26 01:29:52

标签: php image variables insert resize

确定。我有一个实际上是图片的变量

我认为这就是创造这样一个

的原因

$ Img = imagecreatefromjpeg($ srcFile);

现在我想将图像宽度调整为550,但不会失去需要保持相同的宽高比。

然后,应将生成的图像重新注册到变量中,以便其余代码可以插入文本等等。

想要使网站失去活力 - 假冒冒险者和其他人。

我找到了俄罗斯人的一些代码 - 一切正常但调整大小不起作用所以我想使用DataLife引擎和代码使整个网站都同意海报以及用户能够生成和发布的位置。

在这里它(在所有方面,不仅减少图像,如果它们是巨大的)

有一些小的象形文字,但这是由于俄罗斯的西里尔字母。

<?php

  if (!defined("DATALIFEENGINE"))
  {
    die("Hacking Attemp!");
  }

    function win_to_utf($s) 
{ 
for($i=0, $m=strlen($s); $i<$m; $i++) 
{ 
$c=ord($s[$i]); 
if ($c<=127) 
{$t.=chr($c); continue; } 
if ($c>=192 && $c<=207) 
{$t.=chr(208).chr($c-48); continue; } 
if ($c>=208 && $c<=239) 
{$t.=chr(208).chr($c-48); continue; } 
if ($c>=240 && $c<=255) 
{$t.=chr(209).chr($c-112); continue; } 
if ($c==184) { $t.=chr(209).chr(209); 
continue; }; 
if ($c==168) { $t.=chr(208).chr(129); 
continue; }; 
} 
return $t; 
}
  $dirdem=ROOT_DIR.'/uploads/demotivation/';
 $tpl->load_template('demgen.tpl');
if (isset($_FILES["file"])){
$myfile = $_FILES["file"]["tmp_name"];
$font = str_replace ( "\\", "/", getcwd () )."/arial.ttf";
$font1 = $font;
$headerSize = 33.5;
$textSize = 24.0;
 $imageMargin = 20;
  $spacing = 16;
  $borderPad = 16;
$srcFile = $myfile;

 $header = win_to_utf( $_POST["head"]);
  $text = win_to_utf($_POST["text"]);
 if( !file_exists( $srcFile ) ){
    echo "picture file not found\n";
    exit;
  }
  $img = imagecreatefromjpeg( $srcFile );
  list($w, $h) = getimagesize( $srcFile );

  $ha1 = imagettfbbox($headerSize, 0, $font1, $header );
  $ha2 = imagettfbbox($textSize, 0,$font, $text );

  $wt1 = $ha1[2]-$ha1[0];
  $ht1 = $ha1[1]-$ha1[7];
  $wt2 = $ha2[2]-$ha2[0];
  $ht2 = $ha2[1]-$ha2[7];

  $fw = $w + 8 + $imageMargin * 2 + $borderPad * 2;
  $fh = $h + 8 + $imageMargin * 2 + $borderPad * 2 + $ht1 + $ht2 + $spacing * 3;
  $fon = imagecreatetruecolor($fw, $fh);

  $white = imagecolorallocate( $fon, 255, 255, 255 );
  $black = imagecolorallocate( $fon,   0,   0,   0 );
  imagefill( $fon, 0, 0, $black );

  imagecopy( $fon, $img, $imageMargin + $borderPad + 4, $imageMargin + $borderPad + 4, 0, 0, $w, $h );

  imagerectangle( $fon, $imageMargin + $borderPad + 4 - 3, $imageMargin + $borderPad + 4 - 3,
           $imageMargin + $borderPad + $w + 4 + 2, $imageMargin + $borderPad + $h + 4 + 2, $white );
  imagerectangle( $fon, $imageMargin + $borderPad + 4 - 4, $imageMargin + $borderPad + 4 - 4,
           $imageMargin + $borderPad + $w + 4 + 3, $imageMargin + $borderPad + $h + 4 + 3, $white );

  imagettftext( $fon, $headerSize, 0,
    ($fw - $wt1) / 2, $imageMargin + $borderPad*2 + 8 + $h + $ht1 + $spacing,
    $white, $font1, $header );

  imagettftext( $fon, $textSize, 0,
    ($fw - $wt2) / 2, $imageMargin + $borderPad*2 + 8 + $h + $ht1 + $ht2 + $spacing*2,
    $white, $font, $text );
 $ts=$dirdem.time();
 $ts1='/uploads/demotivation/'.time();
  imagejpeg( $fon, $ts."_demotiv.jpg", 98 );
  imagecolordeallocate( $fon, $black );
  imagecolordeallocate( $fon, $white );
  imagedestroy( $fon );
 $output=$ts1."_demotiv.jpg";
 $wdr= <<<HTML
<center>
     <form enctype="multipart/form-data">
       <tr><td width="120" height="30"><span style="font-size: xx-small;">» Ïðÿìàÿ ññûëêà:</span></td><td><input type="text" name="head" value="http://{$_SERVER['HTTP_HOST']}{$output}" style="border:1px solid #ccc;height:16px;width:300px;padding-left:5px;"></td></tr>
    <tr><td width="120" height="40"><span style="font-size: xx-small;">» Êîä äëÿ ôîðóìà:</span></td><td><input type="text" name="head"  value="[img]http://{$_SERVER['HTTP_HOST']}{$output}[/img]" style="border:1px solid #ccc;height:16px;width:300px;padding-left:5px;"></td></tr> 
    <tr><td width="120" height="30"><span style="font-size: xx-small;">» HTML-êîä:</span></td><td><input type="text" name="head" value="&lt;img src=&quot;http://{$_SERVER['HTTP_HOST']}{$output}&quot;&gt;" style="border:1px solid #ccc;height:16px;width:300px;padding-left:5px;"></td></tr> 
</form>
</center>
HTML;
} else {
$wdr = <<<HTML
<center>
     <form  method="post" enctype="multipart/form-data">
<tr><td width="120" height="40"><span style="font-size: xx-small;">» <b>Øàã 1:</b> Èçîáðàæåíèå:</span></td><td><input type="file" name="file"></td></tr>
<tr><td width="120" height="30"><span style="font-size: xx-small;">» <b>Øàã 2:</b> Íàäïèñü ââåðõó:</span></td><td><input type="text" value="Ââåäèòå íàäïèñü..." onblur="if(this.value=='') this.value='Ââåäèòå íàäïèñü...';" onfocus="if(this.value=='Ââåäèòå íàäïèñü...') this.value='';" name="head" style="border:1px solid #ccc;height:16px;width:165px;padding-left:5px;"></td></tr>
<tr><td width="120" height="30"><span style="font-size: xx-small;">» <b>Øàã 3:</b> Íàäïèñü âíèçó:</span></td><td><input type="text" value="Ââåäèòå íàäïèñü..." onblur="if(this.value=='') this.value='Ââåäèòå íàäïèñü...';" onfocus="if(this.value=='Ââåäèòå íàäïèñü...') this.value='';" name="text" style="border:1px solid #ccc;height:16px;width:165px;padding-left:5px;" value=""></td></tr>
</table><br>
<center><input type="submit" name="submit" value="Ñîçäàòü" style="border:1px solid #ccc;height:22px;width:200px;padding-left:5px;"></center>
</form>
</center>
HTML;

}
$tpl->set('{cnt}', $wdr);

    $tpl->compile('content');
    $tpl->clear();
?>

1 个答案:

答案 0 :(得分:0)

我认为你的意思是比率,其中x或y轴的较大者用作比率的基础:if (oldwidth > oldheight) ratio = newwidth / oldwidth else ratio = newheight / oldheight。您还需要考虑复制图像的最大允许宽度和高度。使用PHP GD功能,就像这样......

$imageFilePath = '/original.jpg'; // path to original jpg
$imageSource = imagecreatefromjpeg($imageFilePath);
$newImageFilePath = '/new.jpg'; // path to new resized image name
$maxWidth = 100; // the max width you allow
$maxHeight = 100; // the max height you allow
$imgInfo = getimagesize($imageFilePath);
$originalWidth = (int) $imgInfo[0];
$originalHeight = (int) $imgInfo[1];
$originalType = (int) $imgInfo[2];
$conversionRatio = (($originalWidth > $originalHeight) ? $maxWidth / $originalWidth : $maxHeight / $originalHeight); // the important part
$newWidth = $originalWidth * $conversionRatio;
$newHeight = $originalHeight * $conversionRatio;
$newImage = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($newImage, $imageSource, 0, 0, 0, 0, $newWidth, $newHeight, $originalWidth, $originalHeight);
imagejpeg($newImage, $newImageFilePath);