Question

下面是我用来在mysql数据库中检索3个blob类型图像的php代码！

虽然我成功地检索了它们，但我不明白如何嵌入html代码以控制检索到的图像的高度和宽度！

此外，我还可以检索png类型的图像。

请根据我上传到数据库的图像格式帮助我检索任何fomat（例如jpeg）中的图像（我已经获得了上传图像的类型。（例如 - $images1=getimagesize($_FILES['Image1']['tmp_name']); $imagetype1=$images1['mime'];)）。

所以我需要2个主要帮助：

调整从上面的PHP代码中检索到的图像的宽度和高度

以格式

检索图像

<?php
        require("includes/db.php");

        $sql="SELECT * FROM `order` ";
        $result=mysqli_query($db,$sql);

echo "<table>";


while($row=mysqli_fetch_array($result))
{

echo"<tr>";
 echo"<td>";
echo $row["OrderNo."];
 echo "<br>";
 echo"</td>";
 echo"<td>";
echo $row["NIC"];
 echo "<br>";
 echo"</td>";
 echo"<td>";
echo $row["DP"];
 echo "<br>";
 echo"</td>";
 echo"<td>";
echo $row["Address"];
 echo "<br>";
 echo"</td>";
 echo"<td>";
echo $row["DPTime"];
 echo "<br>";
 echo"</td>";
 echo"<td>";
echo $row["Telephone"];
 echo "<br>";
 echo"</td>";
 echo"<td>";
echo $row["Email"];
 echo "<br>";
 echo"</td>";
echo"<td >";
echo '<img src="data:image/png;base64,'.base64_encode( $row['Image1'] ).' " />';

echo "<br>";
 echo"</td>";
echo"<td >";
echo '<img src="data:image/png;base64,'.base64_encode( $row['Image2'] ).' "/>';

echo "<br>";
 echo"</td>";
  echo"<td >";
 echo '<img src="data:image/png;base64,'.base64_encode( $row['Image3'] ).' "/>';

echo "<br>";
 echo"</td>";

 echo"</tr>";

}
echo "</table>";

?>

Answer 1

  <?php

// This is the temporary file created by PHP
$uploadedfile ="search.png";

// Create an Image from it so we can do the resize
 $info = getimagesize($uploadedfile);
if ($info['mime'] == 'image/jpeg') 
        $src = imagecreatefromjpeg($uploadedfile);

    elseif ($info['mime'] == 'image/gif') 
        $src = imagecreatefromgif($uploadedfile);

    elseif ($info['mime'] == 'image/png') 
        $src = imagecreatefrompng($uploadedfile);
//$src = imagecreatefromjpeg($uploadedfile);


list($width,$height)=getimagesize($uploadedfile);

$newwidth=80;
$newheight=($height/$width)*80;
$tmp=imagecreatetruecolor($newwidth,$newheight);


imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,$width,$height);


$filename =$uploadedfile;
imagejpeg($tmp,$filename,100);

imagedestroy($src);
imagedestroy($tmp);











?>

这样可以调整图像大小。

调整图像和图像格式的大小

1 个答案: