Learn about encapsulating watermark functions in PHP in one minute-PHP Problem-php.cn

Learn about encapsulating watermark functions in PHP in one minute

慕斯

Release： 2023-03-10 21:58:01

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We have learned so much about PHP in PHP. I don’t know how much you know about the encapsulated watermark function. I believe that a large number of people will not know this part of the knowledge. So don’t worry, this article will lead you to learn more about it. Understand this content deeply.

Encapsulating watermark function:

Let’s create a file first, Then we first define a function, and then there are several resources that need to be written, and then give it a test by default, and then transparency, and then store space in time, and then we start further operations. The specific code is as follows:

Open the picture:

$sourceRes = open ($source) ;
var_dump ($source) ;
$waterRes=open ($water) ;

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//Get the size of the picture and calculate the position

$sourceInfo=getimagesize ($source) ;
$waterInfo = getimagesize ($water) ;

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Function to open the picture:

function open ($path)
{

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Still defines a function, and then we need to pass a path, and then we determine whether it exists,

if (!file_exists ($path) ) {
exit(&#39;文件不存在&#39;) ;
$info=getimagesize ($path) ;
//var_dump($info) ;
switch ($info[&#39;mime&#39;]) (
  case &#39; image/jpeg&#39; :
  case &#39; image/jpg&#39; :
  case
  &#39; image/pjpeg&#39; :
  $res=imagecreatefromjpeg ($path) ;
  break;
  case&#39;image/png&#39; :
  $res=imagecreatefrompng ($path) ;
  break ;
  case&#39;image/gif&#39; :
  $res = imagecreatefromgif ($path) ;
  break; .
  case&#39;image/wbmp&#39; :
  case &#39; image/bmp&#39; :
  $res=imagecreatefromwbmp ($path) ;
  break;
  
}
}

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//Calculate the position

switch ($position) {
  case1 :
  $x=0;
  $y-0;
  break;
  case 2 :
  $x=($sourceInfo[0] - $waterInfo[0]) / 2;
  $y=0;
  break;
  case 3 :
  $x=$sourceInfo[0] - $waterInfo[0];
  $y=O;
  break;
  caso 4 :
  $X=0;
  $y = ($sourceInfo[1] - $waterInfo[]) / 2;
  break;
  case 5 :
    $x =($sourceInfo[0] - $waterInfo[0]), / 2;
    2;
    $y = ($sourceInfo[1] - $waterInfo[1]) / 2;
    break;
    case 6: 
    $x = $sourceInfo[0] - $waterInfo[0];
    $y = ($sourceInfo[1] - $waterInfo[1]) / 2
    break;
    case 7 :
    $x-0;
    $y - $sourceInfo[1] - SwaterInfo[1];
    break;
    case 8 :
    $x=($sourceInfo[0] - $waterInfo[0]) / 2;
    $y = $sourceInfo[1] - $waterInfo[1];
    break;
    caso 9 :
    $x=$sourceInfo[0] - $waterInfo[0];
    $y = $sourceInfo[1] - $waterInfo[1];
    break;
    default :
    $x=mt_rand(0 ，$sourceInfo[0] - $waterInfo[0]) ;
    $y=mt_rand(0，$sourceInfo[1] - $waterInfo[1]) ;
    break;

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//Use the value obtained by xy for use when merging two pictures

imagecopymerge () ;

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