Código :
<?php /* ---------------------------------------------------------------- Easy Reflections by Richard Davey, Core PHP ([email protected]) v2 - 2nd March 2007 Updates include changes by Monte Ohrt ([email protected]) ---------------------------------------------------------------- You are free to use this in any product, or on any web site. Latest builds at: http://reflection.corephp.co.uk ---------------------------------------------------------------- This script accepts the following $_GET parameters: img required The source image (to reflect) height optional Height of the reflection (% or pixel value) bgc optional Background colour to fade into, default = #000000 fade_start optional Start the alpha fade from whch value? (% value) fade_end optional End the alpha fade from whch value? (% value) jpeg optional Output will be JPEG at \'param\' quality (default 80) cache optional Save reflection image to the cache? (boolean) */ // Replace special chars to be HTML-Code function stringToHTML($string) { $array_search = array(\'é\', \'è\', \'ë\', \'ê\', \'à\', \'ä\', \'Ä\', \'â\', \'ù\', \'ü\', \'Ü\', \'û\', \'ö\', \'Ö\', \'ô\', \'ï\', \'î\'; $array_replace = array(\'é\', \'è\', \'ë\', \'ê\', \'à\', \'ä\', \'Ä\', \'â\', \'ù\', \'ü\', \'Ü\', \'û\', \'ö\', \'Ö\', \'ô\', \'ï\', \'î\'; $string_return = str_replace($array_search, $array_replace, $string); return $string_return; } // CACHE! EVERYTHING! $_GET[\'cache\'] = 1; // PHP Version sanity check if (version_compare(\'4.3.2\', phpversion()) == 1) { echo \'This version of PHP is not fully supported. You need 4.3.2 or above.\'; exit(); } // GD check if (extension_loaded(\'gd\' == false && !dl(\'gd.so\') { echo \'You are missing the GD extension for PHP, sorry but I cannot continue.\'; exit(); } // Our allowed query string parameters // To cache or not to cache? that is the question if (isset($_GET[\'cache\'])) { if ((int) $_GET[\'cache\'] == 1) { $cache = true; } else { $cache = false; } } else { $cache = false; } // img (the image to reflect) if (isset($_GET[\'img\'])) { $source_image = $_GET[\'img\']; //$source_image = utf8_decode($source_image); $source_image = str_replace(\'://\',\'\',$source_image); //$source_image = $_SERVER[\'DOCUMENT_ROOT\'] . DIRECTORY_SEPARATOR . $source_image; if (file_exists($source_image)) { if ($cache) { $cache_dir = dirname($source_image); $cache_base = basename($source_image); $cache_file = \'refl_\' . md5($_SERVER[\'REQUEST_URI\']) . \'_\' . $cache_base; $cache_path = $cache_dir . DIRECTORY_SEPARATOR . $cache_file; if (file_exists($cache_path) && filemtime($cache_path) >= filemtime($source_image)) { // Use cached image $image_info = getimagesize($cache_path); header(\"Content-type: \" . $image_info[\'mime\']); readfile($cache_path); exit(); } } } else { echo \'Cannot find or read source image\'; exit(); } } else { echo \'No source image to reflect supplied\'; exit(); } // bgc (the background colour used, defaults to black if not given) if (isset($_GET[\'bgc\']) == false) { $red = 0; $green = 0; $blue = 0; } else { // Extract the hex colour $hex_bgc = $_GET[\'bgc\']; // Does it start with a hash? If so then strip it $hex_bgc = str_replace(\'#\', \'\', $hex_bgc); switch (strlen($hex_bgc)) { case 6: $red = hexdec(substr($hex_bgc, 0, 2)); $green = hexdec(substr($hex_bgc, 2, 2)); $blue = hexdec(substr($hex_bgc, 4, 2)); break; case 3: $red = substr($hex_bgc, 0, 1); $green = substr($hex_bgc, 1, 1); $blue = substr($hex_bgc, 2, 1); $red = hexdec($red . $red); $green = hexdec($green . $green); $blue = hexdec($blue . $blue); break; default: // Wrong values passed, default to black $red = 0; $green = 0; $blue = 0; } } // height (how tall should the reflection be?) if (isset($_GET[\'height\'])) { $output_height = $_GET[\'height\']; // Have they given us a percentage? if (substr($output_height, -1) == \'%\' { // Yes, remove the % sign $output_height = (int) substr($output_height, 0, -1); // Gotta love auto type casting if ($output_height < 10) { $output_height = \"0.0$output_height\"; } else { $output_height = \"0.$output_height\"; } } else { $output_height = (int) $output_height; } } else { // No height was given, so default to 50% of the source images height $output_height = 0.50; } if (isset($_GET[\'fade_start\'])) { if (strpos($_GET[\'fade_start\'], \'%\' !== false) { $alpha_start = str_replace(\'%\', \'\', $_GET[\'fade_start\']); $alpha_start = (int) (127 * $alpha_start / 100); } else { $alpha_start = (int) $_GET[\'fade_start\']; if ($alpha_start < 1 || $alpha_start > 127) { $alpha_start = 80; } } } else { $alpha_start = 80; } if (isset($_GET[\'fade_end\'])) { if (strpos($_GET[\'fade_end\'], \'%\' !== false) { $alpha_end = str_replace(\'%\', \'\', $_GET[\'fade_end\']); $alpha_end = (int) (127 * $alpha_end / 100); } else { $alpha_end = (int) $_GET[\'fade_end\']; if ($alpha_end < 1 || $alpha_end > 0) { $alpha_end = 0; } } } else { $alpha_end = 0; } /* ---------------------------------------------------------------- Ok, let\'s do it ... ---------------------------------------------------------------- */ // How big is the image? $image_details = getimagesize($source_image); if ($image_details === false) { echo \'Not a valid image supplied, or this script does not have permissions to access it.\'; exit(); } else { $width = $image_details[0]; $height = $image_details[1]; $type = $image_details[2]; $mime = $image_details[\'mime\']; } // Calculate the height of the output image if ($output_height < 1) { // The output height is a percentage $new_height = $height * $output_height; } else { // The output height is a fixed pixel value $new_height = $output_height; } // Detect the source image format - only GIF, JPEG and PNG are supported. If you need more, extend this yourself. switch ($type) { case 1: // GIF $source = imagecreatefromgif($source_image); break; case 2: // JPG $source = imagecreatefromjpeg($source_image); break; case 3: // PNG $source = imagecreatefrompng($source_image); break; default: echo \'Unsupported image file format.\'; exit(); } /* ---------------------------------------------------------------- Build the reflection image ---------------------------------------------------------------- */ // We\'ll store the final reflection in $output. $buffer is for internal use. $output = imagecreatetruecolor($width, $new_height); $buffer = imagecreatetruecolor($width, $new_height); // Copy the bottom-most part of the source image into the output imagecopy($output, $source, 0, 0, 0, $height - $new_height, $width, $new_height); // Rotate and flip it (strip flip method) for ($y = 0; $y < $new_height; $y++) { imagecopy($buffer, $output, 0, $y, 0, $new_height - $y - 1, $width, 1); } $output = $buffer; /* ---------------------------------------------------------------- Apply the fade effect ---------------------------------------------------------------- */ // This is quite simple really. There are 127 available levels of alpha, so we just // step-through the reflected image, drawing a box over the top, with a set alpha level. // The end result? A cool fade into the background colour given. // There are a maximum of 127 alpha fade steps we can use, so work out the alpha step rate $alpha_length = abs($alpha_start - $alpha_end); for ($y = 0; $y <= $new_height; $y++) { // Get % of reflection height $pct = $y / $new_height; // Get % of alpha if ($alpha_start > $alpha_end) { $alpha = (int) ($alpha_start - ($pct * $alpha_length)); } else { $alpha = (int) ($alpha_start + ($pct * $alpha_length)); } imagefilledrectangle($output, 0, $y, $width, $y, imagecolorallocatealpha($output, $red, $green, $blue, $alpha)); } /* ---------------------------------------------------------------- HACK - Build the reflection image by combining the source image AND the reflection in one new image! ---------------------------------------------------------------- */ $finaloutput = imagecreatetruecolor($width, $height+$new_height); imagecopy($finaloutput, $source, 0, 0, 0, 0, $width, $height); imagecopy($finaloutput, $output, 0, $height, 0, 0, $width, $new_height); $output = $finaloutput; /* ---------------------------------------------------------------- Output our final PNG ---------------------------------------------------------------- */ if (headers_sent()) { echo \'Headers already sent, I cannot display an image now. Have you got an extra line-feed in this file somewhere?\'; exit(); } else { // If you\'d rather output a JPEG instead of a PNG then pass the parameter \'jpeg\' (no value needed) on the querystring if (isset($_GET[\'png\'])) { // PNG header(\"Content-type: image/png\"); imagepng($output); // Save cached file if ($cache) { imagepng($output, $cache_path); } } else { if(!isset( $_GET[\'jpeg\'])) $_GET[\'jpeg\'] = 90; $quality = (int) $_GET[\'jpeg\']; if ($quality < 1 || $quality > 100) { $quality = 90; } // JPEG (the final parameter = the quality, 0 = terrible, 100 = pixel perfect) header(\"Content-type: image/jpeg\"); imagejpeg($output, \'\', $quality); // Save cached file if ($cache) { imagejpeg($output, $cache_path, $quality); } } imagedestroy($output); exit(); } ?>
Bueno cualquier ayuda la agradezco y es bienvenida, y si me pueden enseñar un poco a cerca del funcionamiento mejor sería.
