~~~ class Ajax { /** * 生成后缀图标 */ function icon() { $suffix = 'jpg';//这里可以动态传参数显示后缀标识 header('Content-type: image/svg+xml'); $suffix = $suffix ? $suffix : "FILE"; echo $this->build_suffix_image($suffix); exit; } /** * 生成文件后缀图片 * @param string $suffix 后缀 * @param null $background * @return string */ function build_suffix_image($suffix, $background = null) { $suffix = mb_substr(strtoupper($suffix), 0, 4); $total = unpack('L', hash('adler32', $suffix, true))[1]; $hue = $total % 360; list($r, $g, $b) = hsv2rgb($hue / 360, 0.3, 0.9); $background = $background ? $background : "rgb({$r},{$g},{$b})"; $icon = <<<EOT <svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve"> <path style="fill:#E2E5E7;" d="M128,0c-17.6,0-32,14.4-32,32v448c0,17.6,14.4,32,32,32h320c17.6,0,32-14.4,32-32V128L352,0H128z"/> <path style="fill:#B0B7BD;" d="M384,128h96L352,0v96C352,113.6,366.4,128,384,128z"/> <polygon style="fill:#CAD1D8;" points="480,224 384,128 480,128 "/> <path style="fill:{$background};" d="M416,416c0,8.8-7.2,16-16,16H48c-8.8,0-16-7.2-16-16V256c0-8.8,7.2-16,16-16h352c8.8,0,16,7.2,16,16 V416z"/> <path style="fill:#CAD1D8;" d="M400,432H96v16h304c8.8,0,16-7.2,16-16v-16C416,424.8,408.8,432,400,432z"/> <g><text><tspan x="220" y="380" font-size="124" font-family="Verdana, Helvetica, Arial, sans-serif" fill="white" text-anchor="middle">{$suffix}</tspan></text></g> </svg> EOT; return $icon; } } ~~~ ~~~ //前端显示 <img src="/ajax/icon?suffix=png" class="img-responsive"> ~~~