Created
June 11, 2017 14:53
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small script for thumbnails creation/display
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| <html> | |
| <head> | |
| <title> static images </title> | |
| </head> | |
| <body> | |
| <pre> | |
| <?php | |
| function make_thumb($src, $dest, $desired_width) { | |
| /* read the source image */ | |
| // $source_image = imagecreatefromjpeg($src); | |
| $source_image = imagecreatefromstring ( file_get_contents($src) ); | |
| $width = imagesx($source_image); | |
| $height = imagesy($source_image); | |
| /* find the "desired height" of this thumbnail, relative to the desired width */ | |
| if ($height > $width) { | |
| $desired_height = $desired_width; | |
| $desired_width = floor($width * ($desired_height / $height)); | |
| } else { | |
| $desired_height = floor($height * ($desired_width / $width)); | |
| } | |
| /* create a new, "virtual" image */ | |
| $virtual_image = imagecreatetruecolor($desired_width, $desired_height); | |
| /* copy source image at a resized size */ | |
| imagecopyresampled($virtual_image, $source_image, 0, 0, 0, 0, $desired_width, $desired_height, $width, $height); | |
| /* create the physical thumbnail image to its destination */ | |
| imagejpeg($virtual_image, $dest); | |
| } | |
| /** display images */ | |
| $IMG_PATTERN = "*.{jpg,JPG,jpeg,png,PNG,gif,GIF}"; | |
| $W = 4; // page width | |
| $H = 6; // page height | |
| $PAGE_SIZE = $W * $H; | |
| $THUMBS='thumbs'; // thumbnails directory | |
| if (! is_dir($THUMBS)) { | |
| mkdir($THUMBS); | |
| } | |
| if (isset( $_GET['page'] ) ) { | |
| $start = ( ($_GET['page'] - 1) * $PAGE_SIZE ) + 1; // numéro d'image de départ | |
| $page = $_GET['page']; // numéro de page | |
| } else { | |
| $start = 1; | |
| $page = 1; | |
| } | |
| // navigation | |
| if ($page > 1) { | |
| echo "<a href='?page=" . ($page-1) ."'> prev </a>"; | |
| } | |
| echo "<a href='?page=" . ($page + 1) . "'> next </a>\n"; | |
| // table d'images de la page | |
| $c = 1; | |
| echo "<table><tr>"; | |
| foreach (glob($IMG_PATTERN, GLOB_BRACE) as $filename) { | |
| if ($c >= $start) { | |
| if ($c < $start + $PAGE_SIZE) { | |
| // on est dans la page à afficher | |
| // get thumbnail path | |
| $filename_no_ext = reset(explode('.', $filename)); | |
| $thumbnail = $THUMBS . '/' . $filename_no_ext . '.jpg'; | |
| if (! is_file($thumbnail) ) { | |
| // create thumbnail | |
| make_thumb ($filename, $thumbnail, 150); | |
| } | |
| // affiche thum et lien image | |
| echo "\t<td> <a href='$filename'><img src='$thumbnail'><br/>$filename</a> </td>\n"; | |
| if (( ($c-$start+1) % $W) == 0) { | |
| // fin de ligne | |
| echo "</tr><tr>\n"; | |
| } | |
| } else { | |
| // on a dépassé la page, stop | |
| break; | |
| } | |
| } | |
| $c += 1; | |
| } | |
| echo "</tr></table>\n"; | |
| // navigation | |
| if ($page > 1) { | |
| echo "<a href='?page=" . ($page-1) ."'> prev </a>"; | |
| } | |
| echo "<a href='?page=" . ($page + 1) . "'> next </a>\n"; | |
| ?> | |
| </pre> | |
| </body> | |
| </html> |
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