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Showing posts from March 5, 2010

Image watermark with PHP

Image
Steps: 1. Load both images 2. Get size of both images 3. Copy watermark to main image 4. Print image to screen PHP functions: imagecreatefromgif imagecreatefromjpeg getimagesize imagecopymerge header imagejpeg imagedestroy Watermark image: Main image: <?php $main_img = "Happy_valentines_day.jpg"; // main big photo / picture $watermark_img = "watermark.gif"; // use GIF or PNG, JPEG has no tranparency support $padding = 3; // distance to border in pixels for watermark image $opacity = 100; // image opacity for transparent watermark $watermark = imagecreatefromgif($watermark_img); // create watermark $image = imagecreatefromjpeg($main_img); // create main graphic if(!$image || !$watermark) die("Error: main image or watermark could not be loaded!"); $watermark_size = getimagesize($watermark_img); $watermark_width = $watermark_size[0]; $watermark_height = $watermark_size[1]; $image_size = getimagesize($main_img); $dest_x = $imag

Check password safety with JavaScript while typing

<script language="javascript"> function check_password_safety(pwd){ var msg = ""; var points = pwd.length; var password_info = document.getElementById('password_info'); var has_letter = new RegExp("[a-z]"); var has_caps = new RegExp("[A-Z]"); var has_numbers = new RegExp("[0-9]"); var has_symbols = new RegExp("\\W"); if(has_letter.test(pwd)) { points += 4; } if(has_caps.test(pwd)) { points += 4; } if(has_numbers.test(pwd)) { points += 4; } if(has_symbols.test(pwd)) { points += 4; } if( points >= 24 ) { msg = ' Your password is strong! '; } else if( points >= 16 ) { msg = ' Your password is medium! '; } else if( points >= 12 ) { msg = ' Your password is weak! '; } else { msg = ' Your password is very weak! '; } password_info.innerHTML = msg ; } </script> <input type="text" name="pwd" id="pwd" size="20" onkeyup=&q