phPie绘制你的cake pie

<?php class phPie { var $data = array('NO DATA'=>1); var $width = 400; // width of generated image, in pixels var $height = 250; // height of generated image, in pixels var $CenterX = null; // defaults to round($width / 2) var $CenterY = null; // defaults to round($height / 2) var $DiameterX = null; // defaults to round($width * 0.95) var $DiameterY = null; // defaults to round($height * 0.95) var $MinDisplayPercent = 1; // smallest slice drawn on chart, in percent of total var $MarginPercent = 10; // margin around graph, in percent of image area var $DisplayColors = array('333399','339933','993333','339966', '336699', '663399', '669933', '993366', '996633', '66CC99', '6699CC', '9966CC', '99CC66', 'CC6699', 'CC9966'); var $BackgroundColor = 'FFFFFF'; var $LineColor = '000000'; var $OtherColor = '666666'; var $Legend = true; // if true (and LegendOnSlices is false), show legend down left side var $LegendOnSlices = true; // if true, label slices with data name and percentage var $FontNumber = 5; // size (1 = smallest, 5 = largest) of text written to graph var $SortData = true; // if true, sort data into largest-to-smallest order before graphing var $StartAngle = 0; // start point of pie: 0 = right, 90 = bottom, 180 = left, 270 = top var $SaveFilename = ''; // if not empty, graph will be saved to this file instead of displayed var $antialias = 1.5; // antialiasing amount (number larger than 1). Larger values give smoother display. Graph is rendered at $antialias times the final resolution and resampled down var $title = ''; var $outline = 1; var $BorderColor =000000; function phPie() { if (!function_exists('imagecopyresampled')) { $this->antialias = 1; } return true; } function DisplayPieChart() { if ($this->antialias) { $this->width *= $this->antialias; $this->height *= $this->antialias; } if ($img = $this->InitializeCanvas()) { $this->PlotPie($img); if ($this->SaveFilename) { $this->SaveImage($img, $this->SaveFilename); } else { $this->OutputImage($img); } ImageDestroy($img); return true; } return false; } function ImageCreateSafe($width, $height) { if (function_exists('imagecreatetruecolor')) { if ($img = @ImageCreateTrueColor($width, $height)) { return $img; } } if (function_exists('imagecreate')) { if ($img = @ImageCreate($width, $height)) { return $img; } } return false; } function InitializeCanvas() { if ($img = $this->ImageCreateSafe($this->width, $this->height)) { return $img; } echo 'Cannot Initialize new GD image stream'; return false; } function ImageHexColorAllocate(&$img, $HexColorString) { $R = hexdec(substr($HexColorString, 0, 2)); $G = hexdec(substr($HexColorString, 2, 2)); $B = hexdec(substr($HexColorString, 4, 2)); return ImageColorAllocate($img, $R, $G, $B); } function AddItem($key, $value) { $this->data[$key] = $value; return true; } function PlotPie(&$img) { $background_color = $this->ImageHexColorAllocate($img, $this->BackgroundColor); $line_color = $this->ImageHexColorAllocate($img, $this->LineColor); $other_color = $this->ImageHexColorAllocate($img, $this->OtherColor); $border_color = $this->ImageHexColorAllocate($img, $this->BorderColor); ImageFilledRectangle($img, 0, 0, ImageSX($img), ImageSY($img), $background_color); foreach ($this->DisplayColors as $displaycolor) { $fill_color[] = $this->ImageHexColorAllocate($img, $displaycolor); $label_color[] = $this->ImageHexColorAllocate($img, $displaycolor); } $marginmultiplier = ((100 - $this->MarginPercent) / 100); if (is_null($this->CenterX)) { $this->CenterX = round($this->width / 2); } if (is_null($this->CenterY)) { $this->CenterY = round($this->height / 2); } if (is_null($this->DiameterX)) { $this->DiameterX = round($this->width * $marginmultiplier); } if (is_null($this->DiameterY)) { $this->DiameterY = round($this->height * $marginmultiplier); } if ($this->LegendOnSlices) { $this->DiameterX = 0.85 * min($this->DiameterX, $this->DiameterY); $this->DiameterY = $this->DiameterX; } elseif ($this->Legend) { $this->DiameterX = min($this->DiameterX, $this->DiameterY); $this->DiameterY = $this->DiameterX; $this->CenterX = $this->width - (($this->DiameterX / $marginmultiplier) / 2); $this->CenterY = $this->height - (($this->DiameterY / $marginmultiplier) / 2); } if (!empty($this->title)) { $this->CenterY += ImageFontHeight($this->FontNumber); } $TotalArrayValues = array_sum($this->data); if ($this->SortData) { arsort($this->data); } $Start = $this->StartAngle; $valuecounter = 0; $ValuesSoFar = 0; foreach ($this->data as $key => $value) { $ValuesSoFar += $value; if ($this->LegendOnSlices) { $text_height = ImageFontHeight($this->FontNumber); $startpoint = ($this->StartAngle / 360) + (($ValuesSoFar - ($value / 2)) / $TotalArrayValues); $x_pos = round($this->CenterX + cos($startpoint * 2 * pi()) * $this->DiameterX / 1.85); $y_pos = round($this->CenterY + sin($startpoint * 2 * pi()) * $this->DiameterY / 1.85) - round($text_height / 2); if ($x_pos < $this->CenterX) { // align text that's left-of-centre with right-edge-on-pie, leave other text left-edge-on-pie $available = $x_pos / ImageFontWidth($this->FontNumber) - 8; if (strlen($key) > $available) { $key = substr($key, 0, $available).'..'; //if text goes off screen, truncate and add ... } $text = $key.' '.number_format(@($value / $TotalArrayValues) * 100, 1).'%'; $text_width = ImageFontWidth($this->FontNumber) * strlen($text); $x_pos -= $text_width; } else { $available = ($this->width - $x_pos) / ImageFontWidth($this->FontNumber) - 8; if (strlen($key) > $available) { $key = substr($key, 0, $available).'..'; //if text goes off screen, truncate and add ... } $text = $key.' '.number_format(@($value / $TotalArrayValues) * 100, 1).'%'; } } elseif ($this->Legend) { $x_pos = 5; $y_pos = round((ImageFontHeight($this->FontNumber) * 0.5) + ($valuecounter * 1.5 * ImageFontHeight($this->FontNumber))); $text = $key.' '.number_format(($value / $TotalArrayValues) * 100, 1).'%'; } if (!$this->SortData || (($value / $TotalArrayValues) > ($this->MinDisplayPercent / 100))) { $End = $this->StartAngle + ceil(($ValuesSoFar / $TotalArrayValues) * 360); $this->FilledArc($img, $this->CenterX, $this->CenterY, $this->DiameterX, $this->DiameterY, $Start, $End, $line_color, $fill_color[$valuecounter % count($fill_color)]); if ($this->LegendOnSlices || $this->Legend) { ImageString($img, $this->FontNumber, $x_pos, $y_pos, $text, $label_color[$valuecounter % count($label_color)]); } $Start = $End; } else { // too small to bother drawing - just finish off the arc with no fill and break $End = $this->StartAngle + 360; if ((($TotalArrayValues - $ValuesSoFar) / $TotalArrayValues) > 0.0025) { // only fill in if more than 0.25%, otherwise colors might bleed $this->FilledArc($img, $this->CenterX, $this->CenterY, $this->DiameterX, $this->DiameterY, $Start, $End, $line_color, $other_color); } if ($this->LegendOnSlices || $this->Legend) { $oldtextlen = strlen($text); $text = 'Other '.number_format((($TotalArrayValues - $ValuesSoFar) / $TotalArrayValues) * 100, 1).'%'; $newtextlen = strlen($text); $x_pos = $this->CenterX+$this->DiameterX/2+10;//$x_pos += ($oldtextlen - $newtextlen) * ImageFontWidth($this->FontNumber); $y_pos = $this->CenterY-5; ImageString($img, $this->FontNumber, $x_pos, $y_pos, $text, $other_color); } break; } $valuecounter++; } //ImageRectangle($img, 0, 0, ImageSX($img)-1, ImageSY($img)-1, $line_color); ImageRectangle($img, 0, 0, ImageSX($img)-1, ImageSY($img)-1, $border_color); $text_width = ImageFontWidth($this->FontNumber) * strlen($this->title); $x_pos = $this->CenterX - $text_width/2; ImageString($img, $this->FontNumber, $x_pos, 5, $this->title, $line_color); return true; } function OutputImage(&$img) { // display image if (!headers_sent()) { if ($this->antialias) { $amount = 1 / $this->antialias; $anti = $this->ImageCreateSafe($this->width*$amount, $this->height*$amount); ImageCopyResampled($anti, $img, 0, 0, 0, 0, $this->width * $amount, $this->height * $amount, $this->width, $this->height); $img = $anti; } $imagetypes = imagetypes(); if ($imagetypes & IMG_PNG) { header('Content-type: image/png'); ImagePNG($img); } elseif ($imagetypes & IMG_GIF) { header('Content-type: image/gif'); ImageGIF($img); } elseif ($imagetypes & IMG_JPG) { header('Content-type: image/jpeg'); ImageJPEG($img); } else { echo 'ERROR: Cannot find compatible output method (JPG, PNG, GIF)'; ImageDestroy($img); return false; } return true; } echo 'ERROR: headers already sent'; return false; } function SaveImage(&$img, $filename) { $imagetypes = imagetypes(); if ($imagetypes & IMG_PNG) { ImagePNG($img, $filename); } elseif ($imagetypes & IMG_GIF) { ImageGIF($img, $filename); } elseif ($imagetypes & IMG_JPG) { ImageJPEG($img, $filename); } else { echo 'ERROR: Cannot find compatible output method (JPG, PNG, GIF)'; return false; } return true; } function gd_version() { $gd_info = gd_info(); if (substr($gd_info['GD Version'], 0, strlen('bundled (')) == 'bundled (') { return (float) substr($gd_info['GD Version'], strlen('bundled ('), 3); // "2.0" (not "bundled (2.0.15 compatible)") } return (float) substr($gd_info['GD Version'], 0, 3); // "1.6" (not "1.6.2 or higher") } function FilledArc(&$img, $CenterX, $CenterY, $DiameterX, $DiameterY, $Start, $End, $line_color, $fill_color='none') { if ($this->gd_version() >= 2.0) { if ($fill_color != 'none') { // fill ImageFilledArc($img, $CenterX, $CenterY, $DiameterX, $DiameterY, $Start, $End, $fill_color, IMG_ARC_PIE); } // outline ImageFilledArc($img, $CenterX, $CenterY, $DiameterX, $DiameterY, $Start, $End, $line_color, IMG_ARC_EDGED | IMG_ARC_NOFILL | IMG_ARC_PIE); } else { // cbriou豲range-art*fr // To draw the arc ImageArc($img, $CenterX, $CenterY, $DiameterX, $DiameterY, $Start, $End, $line_color); // To close the arc with 2 lines between the center and the 2 limits of the arc $x = $CenterX + (cos(deg2rad($Start)) * ($DiameterX / 2)); $y = $CenterY + (sin(deg2rad($Start)) * ($DiameterY / 2)); ImageLine($img, $x, $y, $CenterX, $CenterY, $line_color); $x = $CenterX + (cos(deg2rad($End)) * ($DiameterX / 2)); $y = $CenterY + (sin(deg2rad($End)) * ($DiameterY / 2)); ImageLine($img, $x, $y, $CenterX, $CenterY, $line_color); if ($fill_color != 'none') { if (($End - $Start) > 0.5) { // ImageFillToBorder() will flood the wrong parts of the image if the slice is too small // thanks Jami Lowery <jami豦go-systems*com> for pointing out the problem // To fill the arc, the starting point is a point in the middle of the closed space $x = $CenterX + (cos(deg2rad(($Start + $End) / 2)) * ($DiameterX / 4)); $y = $CenterY + (sin(deg2rad(($Start + $End) / 2)) * ($DiameterY / 4)); ImageFillToBorder($img, $x, $y, $line_color, $fill_color); } } } return true; } } if (!function_exists('gd_info')) { // built into PHP v4.3.0+ (with bundled GD2 library) function gd_info() { ob_start(); phpinfo(); $phpinfo = ob_get_contents(); ob_end_clean(); // based on code by johnschaefer at gmx dot de // from PHP help on gd_info() $gd_info = array( 'GD Version' => '', 'FreeType Support' => false, 'FreeType Support' => false, 'FreeType Linkage' => '', 'T1Lib Support' => false, 'GIF Read Support' => false, 'GIF Create Support' => false, 'JPG Support' => false, 'PNG Support' => false, 'WBMP Support' => false, 'XBM Support' => false ); foreach(explode("/n", $phpinfo) as $line) { foreach ($gd_info as $key => $value) { if (strpos($line, $key) !== false) { $newvalue = trim(str_replace($key, '', strip_tags($line))); $gd_info[$key] = (($newvalue == 'enabled') ? true : $newvalue); } } } return $gd_info; } } ?>

以上为phPie的类文件，可以保持为文件名：phPie.class.php

使用该类实例为：

<?php require_once('phPie.class.php'); $phpie = new phPie; $phpie->data = array(); srand(time()); for ($i = 1; $i < 4; $i++) { $phpie->AddItem('Yinyiniao_test'.$i, rand(0, 1000)); } $phpie->width=800; $phpie->height=600; $phpie->FontNumber=5; $phpie->SortData=true; $phpie->BorderColor=FF0000; //$phpie->DisplayColors=array("4F81BD","FF9933","66CC00","FF33FF","00FFFF","9933FF","EECC33","33FF33"); $phpie->DisplayColors=array("4F81BD","C0504D","9BBB59","FF33FF","00FFFF","9933FF","EECC33","33FF33"); $phpie->Legend = true; $phpie->LegendOnSlices = true; $phpie->DisplayPieChart(); ?>