PHP generates ICO icon using phpthumb_ico class complete example

Here I am using the yii framework.

1. phpthumb_ico is a class that generates ICO icons. The source code is as follows

class phpthumb_ico {

    function phpthumb_ico() {
        return true;
    }


    function GD2ICOstring(&$gd_image_array) {
        foreach ($gd_image_array as $key => $gd_image) {

            $ImageWidths[$key]  = ImageSX($gd_image);
            $ImageHeights[$key] = ImageSY($gd_image);
            $bpp[$key]          = ImageIsTrueColor($gd_image) ? 32 : 24;
            $totalcolors[$key]  = ImageColorsTotal($gd_image);

            $icXOR[$key] = '';
            for ($y = $ImageHeights[$key] - 1; $y >= 0; $y--) {
                for ($x = 0; $x GetPixelColor($gd_image, $x, $y);
                    $a = round(255 * ((127 - $argb['alpha']) / 127));
                    $r = $argb['red'];
                    $g = $argb['green'];
                    $b = $argb['blue'];

                    if ($bpp[$key] == 32) {
                        $icXOR[$key] .= chr($b).chr($g).chr($r).chr($a);
                    } elseif ($bpp[$key] == 24) {
                        $icXOR[$key] .= chr($b).chr($g).chr($r);
                    }

                    if ($a  $scanlinemaskbits) {
          for ($i = 0; $i  $gd_image) {
            $biSizeImage = $ImageWidths[$key] * $ImageHeights[$key] * ($bpp[$key] / 8);

            // BITMAPINFOHEADER - 40 bytes
 $BitmapInfoHeader[$key]  = '';
 $BitmapInfoHeader[$key] .= "\x28\x00\x00\x00";       // DWORD  biSize;
 $BitmapInfoHeader[$key] .= $this->LittleEndian2String($ImageWidths[$key], 4);    // LONG  biWidth;
            // The biHeight member specifies the combined
            // height of the XOR and AND masks.
   $BitmapInfoHeader[$key] .= $this->LittleEndian2String($ImageHeights[$key] * 2, 4);// LONGbiHeight;
   $BitmapInfoHeader[$key] .= "\x01\x00";                   // WORD   biPlanes;
   $BitmapInfoHeader[$key] .= chr($bpp[$key])."\x00";                 // wBitCount;
   $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";              // DWORD  biCompression;
   $BitmapInfoHeader[$key] .= $this->LittleEndian2String($biSizeImage, 4);  // DWORD  biSizeImage;
   $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";             // LONG   biXPelsPerMeter;
   $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";            // LONG   biYPelsPerMeter;
   $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";            // DWORD  biClrUsed;
   $BitmapInfoHeader[$key] .= "\x00\x00\x00\x00";             // DWORD  biClrImportant;
        }


   $icondata  = "\x00\x00";              // idReserved;   // Reserved (must be 0)
   $icondata .= "\x01\x00";        // idType;       // Resource Type (1 for icons)
   $icondata .= $this->LittleEndian2String(count($gd_image_array), 2); // idCount; // How many images?

   $dwImageOffset = 6 + (count($gd_image_array) * 16);
        foreach ($gd_image_array as $key => $gd_image) {
            // ICONDIRENTRY   idEntries[1]; // An entry for each image (idCount of 'em)

   $icondata .= chr($ImageWidths[$key]);     // bWidth;  // Width, in pixels, of the image
   $icondata .= chr($ImageHeights[$key]);  // bHeight; // Height, in pixels, of the image
   $icondata .= chr($totalcolors[$key]);// bColorCount;// Number of colors in image (0 if >=8bpp)
   $icondata .= "\x00";          // bReserved;       // Reserved ( must be 0)

   $icondata .= "\x01\x00";            // wPlanes;         // Color Planes
   $icondata .= chr($bpp[$key])."\x00";   // wBitCount;       // Bits per pixel

   $dwBytesInRes = 40 + strlen($icXOR[$key]) + strlen($icAND[$key]);
$icondata .= $this->LittleEndian2String($dwBytesInRes, 4);//dwBytesInRes;// How many bytes in this resource?

$icondata .= $this->LittleEndian2String($dwImageOffset, 4);// dwImageOffset;
// Where in the file is this image?
            $dwImageOffset += strlen($BitmapInfoHeader[$key]);
            $dwImageOffset += strlen($icXOR[$key]);
            $dwImageOffset += strlen($icAND[$key]);
        }

        foreach ($gd_image_array as $key => $gd_image) {
            $icondata .= $BitmapInfoHeader[$key];
            $icondata .= $icXOR[$key];
            $icondata .= $icAND[$key];
        }

        return $icondata;
    }

    function LittleEndian2String($number, $minbytes=1) {
        $intstring = '';
        while ($number > 0) {
            $intstring = $intstring.chr($number & 255);
            $number >>= 8;
        }
        return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
    }

    function GetPixelColor(&$img, $x, $y) {
        if (!is_resource($img)) {
            return false;
        }
        return @ImageColorsForIndex($img, @ImageColorAt($img, $x, $y));
    }

}

2. Backend

Introduced class:

Yii::$enableIncludePath = false;
Yii::import ( 'application.extensions.ico.phpthumb_ico', 1 );

Solve the problem of generating black background

imagealphablending($resize_im, false);//不合并颜色,直接用$im图像颜色替换,包括透明色
imagesavealpha($resize_im, true);//不要丢了$resize_im图像的透明色
完整方法：

Full method:

/**
	 * icoMaker 在线生成ICO图标
	 * @author flashalliance
	 */
	public function actionIco() {
		$this->breadcrumbs=array_merge($this->breadcrumbs,array(
				'ICO图标制作'
		));
		$output = "";
		$errors=array();
		if(isset($_GET['action'])&&$_GET['action'] == 'make'){
if(isset($_FILES['upimage']['tmp_name']) && $_FILES['upimage']['tmp_name'] && 
is_uploaded_file($_FILES['upimage']['tmp_name'])){
				if($_FILES['upimage']['size']>204800){
					$errors[]="你上传的文件过大，最大不能超过200K。";
				}
$fileext = array("image/pjpeg","image/jpeg","image/gif","image/x-png","image/png");
				if(!in_array($_FILES['upimage']['type'],$fileext)){
					$errors[]="你上传的文件格式不正确，仅支持 png, jpg, gif格式。";
				}
if($im = @imagecreatefrompng($_FILES['upimage']['tmp_name']) or 
$im = @imagecreatefromgif($_FILES['upimage']['tmp_name']) 
or $im = @imagecreatefromjpeg($_FILES['upimage']['tmp_name'])){
$imginfo = @getimagesize($_FILES['upimage']['tmp_name']);
					if(!is_array($imginfo)){
						$errors[]="图像格式错误！";
					}
					if(empty($errors)){
						switch($_POST['size']){
							case 1;
							$resize_im = @imagecreatetruecolor(16,16);
							$size = 16;
							break;
							case 2;
							$resize_im = @imagecreatetruecolor(32,32);
							$size = 32;
							break;
							case 3;
							$resize_im = @imagecreatetruecolor(48,48);
							$size = 48;
							break;
							default;
							$resize_im = @imagecreatetruecolor(32,32);
							$size = 32;
							break;
						}

						imagesavealpha($im, true);
        imagealphablending($resize_im, false);//不合并颜色,直接用$im图像颜色替换,包括透明色
	imagesavealpha($resize_im, true);//不要丢了$resize_im图像的透明色,解决生成黑色背景的问题
	imagecopyresampled($resize_im,$im,0,0,0,0,$size,$size,$imginfo[0],$imginfo[1]);

						Yii::$enableIncludePath = false;
				Yii::import ( 'application.extensions.ico.phpthumb_ico', 1 );
						$icon = new phpthumb_ico();
						$gd_image_array = array($resize_im);
						$icon_data = $icon->GD2ICOstring($gd_image_array);
						$bas_path=dirname ( Yii::app ()->BasePath );
						$bas_new_path=$bas_path.'/upload/ico/';
						if(!is_dir($bas_new_path)){
							mkdir($bas_new_path, 0777, true);
						}
				$filePath=$bas_new_path. date("Ymdhis").uniqid(). rand(1,1000) . ".ico";
						if(file_put_contents($filePath, $icon_data)){
							$output = str_replace($bas_path,'',$filePath);
						}
					}
				}else{
					$errors[]="生成错误请重试！";
				}
			}
		}
		$this->render ( 'ico',array('output'=>$output,'errors'=>$errors));
	}

3. Frontend

<p class="col-md-12">
	<p class="form-horizontal panel panel-default margin-t-10 b-img">
		<p class="panel-heading">
			<p class="pull-left">
			<span class="g-bg glyphicon glyphicon-wrench margin-r-2" aria-hidden="true">
			</span>在线制作ICO图标</p>
			<p class="clearfix"></p>
		</p>
<?php
$form = $this->beginWidget ( &#39;CActiveForm&#39;, array (
		&#39;id&#39; => &#39;ico-form&#39;,
		&#39;htmlOptions&#39; => array (
				&#39;id&#39; => &#39;view_table&#39;,
				&#39;class&#39; => &#39;add-form padding-10&#39;,
				&#39;enctype&#39;=>&#39;multipart/form-data&#39;
		),
		&#39;action&#39;=>&#39;/tool/ico?action=make&#39;,
		&#39;enableAjaxValidation&#39; => false
) );
?>
		<p class="form-group">
				<label class="col-lg-2 control-label">上传文件</label>
				<p class="col-md-5">
					<p class="col-md-6">
						<input id="upimage" type="file" name="upimage" class="hidden">
						<input id="tmp_file" class="form-control" type="text">
					</p>
					<p class="col-md-6">
					<a class="btn btn-default" 
					onclick="$(&#39;input[id=upimage]&#39;).click();">选择文件</a></p>
				</p>
		</p>
		<p class="form-group">
				<label class="col-lg-2 text-right">选择尺寸</label>
				<p class="col-lg-5 btn-group" data-toggle="buttons">
					   <label class="btn btn-sm btn-default">
			 <input type="radio" name="size" id="s1" value="1" checked="checked"> 16*16
					   </label>
					   <label class="btn btn-sm btn-default">
					      <input type="radio" name="size" id="s2" value="2"> 32*32
					   </label>
					   <label class="btn btn-sm btn-default">
					      <input type="radio" name="size" id="s3" value="3"> 48*48
					   </label>
				</p>
		</p>
		<p class="form-group">
			<label class="col-lg-2 text-right">支持格式</label>
			<p class="col-lg-5">
			 png，jpg，gif
			</p>
		</p>
		<p class="list_back">
			<input type="submit" value="生　成" class="btn btn-success">
		</p>
	</p>
<?php $this->endWidget(); ?>
<?php if(!empty($errors) or !empty($output)):?>
	<p class="form-horizontal panel panel-default margin-t-10 b-img">
		<p class="panel-heading margin-b-10">
			<p class="pull-left">
			<span class="g-bg glyphicon glyphicon-wrench margin-r-2" aria-hidden="true">
			</span>生成结果</p>
			<p class="clearfix"></p>
		</p>
		<?php if(!empty($errors)):?>
		<p class="form-group">
			<label class="col-lg-2 text-right">生成失败</label>
			<p class="col-lg-5">
			<?php foreach ($errors as $e):?>
			<?php echo $e;?><br>
			<?php endforeach;?>
			</p>
		</p>
		<?php endif;?>
		<?PHP if (!empty($output)):?>
		<?php
		$form = $this->beginWidget ( &#39;CActiveForm&#39;, array (
				&#39;id&#39; => &#39;ico-form&#39;,
				&#39;htmlOptions&#39; => array (
						&#39;id&#39; => &#39;view_table&#39;,
						&#39;class&#39; => &#39;add-form padding-10&#39;,
				),
				&#39;action&#39;=>&#39;/tool/icoDownload&#39;,
				&#39;enableAjaxValidation&#39; => false
		) );
		?>
		<?php echo CHtml::hiddenField(&#39;filePath&#39;,$output);?>
		<p class="form-group">
			<label class="col-lg-2 text-right">成功生成</label>
			<p class="col-lg-5">
		<img  src="/static/imghw/default1.png"  data-src="<?php echo $output;? alt="PHP generates ICO icon using phpthumb_ico class complete example" >"  class="lazy"  alt="在线制作ICO图标_favicon.ico"  class="margin-r-10">
		<input type="submit" value="立即下载" class="btn btn-sm btn-success margin-l-10">
			</p>
		</p>
		<?php $this->endWidget(); ?>
		<?php endif;?>
	</p>
<?php endif;?>
</p>
<!-- form -->

Rendering:

The above introduces a complete example of using phpthumb_ico class to generate ICO icons with PHP, including uploading files. I hope it will be helpful to friends who are interested in PHP tutorials.