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PODoes PHP or Apache Cache Downloaded Images?
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copied!<p><strong>Problem</strong></p> <p>Using PHP to download a remote image using the same URL before and after the image is changed, downloads the same photo, even though the source is different. Somewhere the image is being cached. </p> <p>The issue is not browser caching as I am looking at the photo directly through windows explorer after copying via FTP.</p> <p><strong>Example</strong></p> <p>1:00pm: Download Photo URL A -> Downloads Photo A</p> <p>1:30pm: Photo A changed to Photo B, but photo URL remains the same</p> <p>2:00pm: Download Photo URL A Again -> Downloads Photo A (But Should be Photo B)</p> <p><strong>My download script</strong></p> <pre><code>function resampimagejpg( $forcedwidth, $forcedheight, $sourcefile, $destfile ) { $fw = $forcedwidth; $fh = $forcedheight; $is = getimagesize( $sourcefile ); if( $is[0] >= $is[1] ) { $orientation = 0; } else { $orientation = 1; $fw = $forcedheight; $fh = $forcedwidth; } if ( $is[0] > $fw || $is[1] > $fh ) { if( ( $is[0] - $fw ) >= ( $is[1] - $fh ) ) { $iw = $fw; $ih = ( $fw / $is[0] ) * $is[1]; } else { $ih = $fh; $iw = ( $ih / $is[1] ) * $is[0]; } $t = 1; } else { $iw = $is[0]; $ih = $is[1]; $t = 2; } if ( $t == 1 ) { $img_src = imagecreatefromjpeg( $sourcefile ); $img_dst = imagecreatetruecolor( $iw, $ih ); imagecopyresampled( $img_dst, $img_src, 0, 0, 0, 0, $iw, $ih, $is[0], $is[1] ); if( !imagejpeg( $img_dst, $destfile, 95 ) ) { exit( ); } return true; } else if ( $t == 2 ) { copy( $sourcefile, $destfile ); return true; } } </code></pre>

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