php - How to resize/crop or reduce the size of an image displayed from SQL Server query? -


i want minimize size of sql server image before gets loaded on clients.

unfortunately example not implemented: resizing , displaying blob element database

code:

<?php include "dbconf2.php";  $sqlimage=" select         f.grafik,         f.knr,         f.brstatus1,         f.untertitel1,         f.anzeigeweb1      foto f      f.knr 'fhtg20900%' ;";  $stmtimage = sqlsrv_query($connvhs, $sqlimage);  while ($result2=sqlsrv_fetch_array($stmtimage)) {              echo "titel: ".$result2['untertitel1']."<br>";             echo "knr: ".$result2['knr']."<br>";             echo "status: ".$result2['brstatus1']."<br>";             echo "web: ".$result2['anzeigeweb1']."<br>";             echo '<img src="data:image/jpeg;base64,'.base64_encode( $result2['grafik']).'" style="max-height: 500px; max-width: 400px;"/>'."<br>";             echo "<br>";  } ?>

edit: simple implementation:

$image = imagecreatefromstring(base64_encode( $result2['grafik'])); $image = imagescale($image, 100, 100);  ob_start(); imagejpeg($image); $contents = ob_get_contents(); ob_end_clean(); echo "<img src='data:image/jpeg;base64,".base64_encode($contents)."' />"; imagedestroy($image);

but these errors:

warning: imagecreatefromstring(): data not in recognized format ...

warning: imagescale() expects parameter 1 resource, boolean given in ...

warning: imagedestroy() expects parameter 1 resource, null given in ...

this might you,but have first create actual image sql. it's better if can save image file actual file.it far more faster.

function resize_image($filename, $tmpname, $xmax, $ymax)   {   $ext = explode(".", $filename);   $ext = $ext[count($ext)-1];    if($ext == "jpg" || $ext == "jpeg")       $im = imagecreatefromjpeg($tmpname);   elseif($ext == "png")       $im = imagecreatefrompng($tmpname);   elseif($ext == "gif")       $im = imagecreatefromgif($tmpname);    $x = imagesx($im);   $y = imagesy($im);    if($x <= $xmax && $y <= $ymax)       return $im;    if($x >= $y) {       $newx = $xmax;       $newy = $newx * $y / $x;   }   else {       $newy = $ymax;       $newx = $x / $y * $newy;   }    $im2 = imagecreatetruecolor($newx, $newy);   imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);   return $im2;    }

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