fnvtk/MBTI_wang
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

chore: 首次提交 - 关联 GitHub fnvtk/MBTI_wang

Browse Source 
Made-with: Cursor
This commit is contained in:
卡若
2026-03-17 12:39:38 +08:00
commit eb510304c0
259 changed files with 60464 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

612
api/app/common/service/PosterService.php Normal file
View File

@@ -0,0 +1,612 @@
<?php
namespace app\common\service;
use think\facade\Db;
/**
* 推广海报合成服务（PHP GD）
* 需要 GD 扩展，中文需在 public/fonts/ 放置 TTF 字体（如 simhei.ttf）
*
* 支持两种模式：
* 1. buildFromConfig() — 根据超管可视化配置渲染
* 2. build() — 旧版硬编码布局（兜底）
*/
class PosterService
{
/** 编辑器画布基准尺寸（CSS px） */
private const CANVAS_W = 375;
private const CANVAS_H = 667;
/** 渲染倍率（2x 清晰度） */
private const SCALE = 2;
/** 旧版硬编码尺寸（向下兼容） */
private const WIDTH = 600;
private const HEIGHT = 1066;
/**
* 字体注册表：key => [显示名, 文件名]
* 文件存放于 public/fonts/ 目录
*/
private const FONT_MAP = [
'noto-sans' => ['思源黑体', 'NotoSansCJKsc-Regular.otf'],
'noto-serif' => ['思源宋体', 'NotoSerifCJKsc-Regular.otf'],
'alimama' => ['阿里妈妈方圆体', 'AlimamaFangYuanTiVF.ttf'],
'wqy-microhei' => ['文泉驿微米黑', 'wqy-microhei.ttc'],
];
/**
* 返回服务器上实际可用的字体列表
* @return array [ ['key'=>'noto-sans','name'=>'思源黑体'], ... ]
*/
public static function getAvailableFonts(): array
{
$base = root_path() . 'public/fonts/';
$list = [];
foreach (self::FONT_MAP as $key => [$name, $file]) {
if (file_exists($base . $file)) {
$list[] = ['key' => $key, 'name' => $name];
}
}
// 兼容旧字体
$legacy = ['simhei.ttf' => '黑体', 'msyh.ttf' => '微软雅黑'];
foreach ($legacy as $file => $name) {
if (file_exists($base . $file)) {
$list[] = ['key' => pathinfo($file, PATHINFO_FILENAME), 'name' => $name];
}
}
return $list;
}
// ─────────────────────────────────────────────
// NEW：根据超管可视化配置渲染海报
// ─────────────────────────────────────────────
/**
* 读取 poster_config 并渲染，若无配置则回退到旧版 build()
* @param int|null $enterpriseId 企业 ID，优先读 enterprise_id={id} 行，无则降级到 enterprise_id=0 全局行
*/
public static function buildFromConfig(array $user, string $qrBinary, ?string $avatarBinary = null, ?int $enterpriseId = null): string
{
$raw = null;
// 1. 优先读取企业专属海报配置（enterprise_id 列）
if ($enterpriseId > 0) {
$eidRow = Db::name('system_config')
->where('key', 'poster_config')
->where('enterprise_id', $enterpriseId)
->find();
if ($eidRow && !empty($eidRow['value'])) {
$raw = $eidRow['value'];
}
}
// 2. 降级到全局配置（enterprise_id=0）
if ($raw === null) {
$row = Db::name('system_config')
->where('key', 'poster_config')
->where('enterprise_id', 0)
->find();
$raw = $row['value'] ?? null;
}
// 安全解码：处理可能的多重 JSON 编码
$cfg = null;
if ($raw) {
$val = $raw;
for ($i = 0; $i < 5 && is_string($val); $i++) {
$decoded = json_decode($val, true);
if ($decoded === null && json_last_error() !== JSON_ERROR_NONE) break;
$val = $decoded;
}
$cfg = is_array($val) ? $val : null;
}
if (empty($cfg) || empty($cfg['elements']) || !is_array($cfg['elements'])) {
return self::build($user, $qrBinary, $avatarBinary);
}
return self::renderConfig($cfg, $user, $qrBinary, $avatarBinary);
}
/**
* 根据配置数组渲染海报
*/
private static function renderConfig(array $cfg, array $user, string $qrBinary, ?string $avatarBinary): string
{
$s = self::SCALE;
$cw = self::CANVAS_W * $s;
$ch = self::CANVAS_H * $s;
$img = imagecreatetruecolor($cw, $ch);
if (!$img) throw new \RuntimeException('GD image create failed');
imagesavealpha($img, true);
imagealphablending($img, true);
// 背景颜色
$bgColorHex = $cfg['bgColor'] ?? '#ffffff';
$bgRgb = self::parseColorToRgb($bgColorHex);
$bgColor = imagecolorallocate($img, $bgRgb[0], $bgRgb[1], $bgRgb[2]);
imagefilledrectangle($img, 0, 0, $cw - 1, $ch - 1, $bgColor);
// 背景图片
if (!empty($cfg['bgImage'])) {
$bgBin = self::fetchImage($cfg['bgImage']);
if ($bgBin) {
$bgImg = @imagecreatefromstring($bgBin);
if ($bgImg) {
imagecopyresampled($img, $bgImg, 0, 0, 0, 0, $cw, $ch, imagesx($bgImg), imagesy($bgImg));
imagedestroy($bgImg);
}
}
}
// 缓存图像资源
$qrRes = null;
$avatarRes = null;
// 预先查询用户最近的测试结果（mbti / pdp / disc / face）
$testResults = self::fetchLatestTestResults((int)($user['id'] ?? 0));
foreach ($cfg['elements'] as $el) {
$type = $el['type'] ?? '';
$x = (int)(($el['x'] ?? 0) * $s);
$y = (int)(($el['y'] ?? 0) * $s);
$w = (int)(($el['w'] ?? 80) * $s);
$h = (int)(($el['h'] ?? 80) * $s);
$fontKey = $el['fontFamily'] ?? null;
// 对齐方式：优先 align 字段，兼容旧 center 字段
$align = $el['align'] ?? (!empty($el['center']) ? 'center' : 'left');
switch ($type) {
case 'text':
$text = $el['content'] ?? '';
$fontSize = max(8, (int)(($el['fontSize'] ?? 16) * $s));
$colorHex = $el['color'] ?? '#333333';
$bold = !empty($el['bold']);
$colorInt = self::allocateHexColor($img, $colorHex);
self::drawTextBlock($img, $x, $y, $w, $h, $text, $colorInt, $fontSize, $bold, $align, $fontKey);
break;
case 'nickname':
$text = mb_substr($user['nickname'] ?? '好友', 0, 20);
$fontSize = max(8, (int)(($el['fontSize'] ?? 16) * $s));
$colorHex = $el['color'] ?? '#333333';
$bold = !empty($el['bold']);
$colorInt = self::allocateHexColor($img, $colorHex);
self::drawTextBlock($img, $x, $y, $w, $h, $text, $colorInt, $fontSize, $bold, $align, $fontKey);
break;
case 'avatar':
if ($avatarBinary) {
if (!$avatarRes) $avatarRes = @imagecreatefromstring($avatarBinary);
if ($avatarRes) {
$shape = $el['shape'] ?? 'circle';
self::drawImageElement($img, $avatarRes, $x, $y, $w, $h, $shape);
}
}
break;
case 'qrcode':
if (!$qrRes) $qrRes = @imagecreatefromstring($qrBinary);
if ($qrRes) {
self::drawImageElement($img, $qrRes, $x, $y, $w, $h, 'square');
}
break;
case 'image':
if (!empty($el['url'])) {
$bin = self::fetchImage($el['url']);
if ($bin) {
$staticImg = @imagecreatefromstring($bin);
if ($staticImg) {
$shape = $el['shape'] ?? 'square';
self::drawImageElement($img, $staticImg, $x, $y, $w, $h, $shape);
imagedestroy($staticImg);
}
}
}
break;
case 'mbti':
case 'pdp':
case 'disc':
$text = $testResults[$type] ?? ($el['content'] ?? strtoupper($type));
$fontSize = max(8, (int)(($el['fontSize'] ?? 16) * $s));
$colorHex = $el['color'] ?? '#333333';
$bold = !empty($el['bold']);
$colorInt = self::allocateHexColor($img, $colorHex);
self::drawTextBlock($img, $x, $y, $w, $h, $text, $colorInt, $fontSize, $bold, $align, $fontKey);
break;
}
}
if ($qrRes) imagedestroy($qrRes);
if ($avatarRes) imagedestroy($avatarRes);
ob_start();
imagepng($img);
$png = ob_get_clean();
imagedestroy($img);
return $png ?: '';
}
/**
* 查询用户最近各类型测试的 resultText
* 复用 Test::_formatRecentRow 的解析逻辑
* @return array ['mbti' => 'ESTP', 'pdp' => '老虎型', 'disc' => 'D型']
*/
private static function fetchLatestTestResults(int $userId): array
{
$out = [];
if ($userId <= 0) return $out;
$types = ['face', 'mbti', 'pdp', 'disc'];
foreach ($types as $t) {
$row = Db::name('test_results')
->where('userId', $userId)
->where('testType', $t)
->order('createdAt', 'desc')
->field('resultData, testType')
->find();
if (!$row || empty($row['resultData'])) continue;
$raw = $row['resultData'];
$data = is_string($raw) ? json_decode($raw, true) : $raw;
if (!is_array($data)) continue;
switch ($t) {
case 'face':
// face 结果中包含 mbti/pdp/disc 子结构
if (!isset($out['mbti'])) {
$v = '';
if (isset($data['mbti']['type'])) $v = $data['mbti']['type'];
elseif (isset($data['mbti']) && is_scalar($data['mbti'])) $v = (string)$data['mbti'];
if ($v !== '') $out['mbti'] = $v;
}
if (!isset($out['pdp'])) {
$v = '';
if (isset($data['pdp']['type'])) $v = $data['pdp']['type'];
elseif (isset($data['pdp']) && is_scalar($data['pdp'])) $v = (string)$data['pdp'];
if ($v !== '') $out['pdp'] = $v;
}
if (!isset($out['disc'])) {
$v = '';
if (isset($data['disc']['primary'])) $v = $data['disc']['primary'] . '型';
elseif (isset($data['disc']) && is_scalar($data['disc'])) $v = (string)$data['disc'];
if ($v !== '') $out['disc'] = $v;
}
break;
case 'mbti':
if (!isset($out['mbti'])) {
$v = $data['mbtiType'] ?? $data['mbti'] ?? '';
if (is_array($v)) $v = $v['type'] ?? '';
if ((string)$v !== '') $out['mbti'] = (string)$v;
}
break;
case 'pdp':
if (!isset($out['pdp'])) {
$v = $data['description']['type'] ?? $data['pdp'] ?? '';
if (is_array($v)) $v = $v['type'] ?? '';
if ((string)$v !== '') $out['pdp'] = (string)$v;
}
break;
case 'disc':
if (!isset($out['disc'])) {
$v = $data['dominantType'] ?? $data['disc'] ?? '';
if (is_array($v)) $v = $v['type'] ?? $v['primary'] ?? '';
if ((string)$v !== '') $out['disc'] = (string)$v . '型';
}
break;
}
}
return $out;
}
/**
* 在指定区域内绘制文字（imagettftext 的 y 为基线坐标）
*/
private static function drawTextBlock($img, int $x, int $y, int $w, int $h, string $text, int $color, int $fontSize, bool $bold, string $align = 'left', ?string $fontKey = null): void
{
$font = self::getFontPath($fontKey);
if ($font && function_exists('imagettftext')) {
$textW = self::ttfTextWidth($font, $fontSize, $text);
switch ($align) {
case 'center': $drawX = $x + (int)(($w - $textW) / 2); break;
case 'right': $drawX = $x + $w - $textW - 6; break;
default: $drawX = $x + 6; break;
}
$drawY = $y + (int)(($h + $fontSize * 0.8) / 2);
imagettftext($img, $fontSize, 0, $drawX, $drawY, $color, $font, $text);
} else {
$f = $fontSize <= 16 ? 4 : 5;
$textW = imagefontwidth($f) * mb_strlen($text);
switch ($align) {
case 'center': $drawX = $x + (int)(($w - $textW) / 2); break;
case 'right': $drawX = $x + $w - $textW - 4; break;
default: $drawX = $x + 4; break;
}
imagestring($img, $f, $drawX, $y + (int)(($h - imagefontheight($f)) / 2), preg_replace('/[^\x20-\x7e]/', '?', $text), $color);
}
}
/**
* 估算 TTF 文字宽度（近似）
*/
private static function ttfTextWidth(string $font, int $size, string $text): int
{
if (function_exists('imagettfbbox')) {
$box = imagettfbbox($size, 0, $font, $text);
return $box ? abs($box[4] - $box[0]) : $size * mb_strlen($text);
}
return $size * mb_strlen($text);
}
/**
* 将图像资源绘制到画布（支持圆形/方形裁剪）
*/
private static function drawImageElement($img, $src, int $x, int $y, int $w, int $h, string $shape): void
{
$srcW = imagesx($src);
$srcH = imagesy($src);
if ($shape === 'circle') {
// 先绘制到临时图像再做圆形遮罩
$tmp = imagecreatetruecolor($w, $h);
imagesavealpha($tmp, true);
imagealphablending($tmp, false);
$transparent = imagecolorallocatealpha($tmp, 0, 0, 0, 127);
imagefilledrectangle($tmp, 0, 0, $w - 1, $h - 1, $transparent);
imagealphablending($tmp, true);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $w, $h, $srcW, $srcH);
// 圆形遮罩（逐像素）—— 仅在 GD 无更好方案时使用
$mask = imagecreatetruecolor($w, $h);
imagesavealpha($mask, true);
imagealphablending($mask, false);
imagefilledrectangle($mask, 0, 0, $w - 1, $h - 1, imagecolorallocatealpha($mask, 0, 0, 0, 127));
imagealphablending($mask, true);
imagefilledellipse($mask, (int)($w / 2), (int)($h / 2), $w, $h, imagecolorallocate($mask, 255, 255, 255));
// 将 tmp 叠加到主图（遮罩内白外黑，白色表示保留区域）
for ($px = 0; $px < $w; $px++) {
for ($py = 0; $py < $h; $py++) {
$mPx = imagecolorat($mask, $px, $py);
$rMask = ($mPx >> 16) & 0xFF;
if ($rMask > 128) {
$srcPx = imagecolorat($tmp, $px, $py);
$r = ($srcPx >> 16) & 0xFF;
$g = ($srcPx >> 8) & 0xFF;
$b = $srcPx & 0xFF;
$c = imagecolorallocate($img, $r, $g, $b);
imagesetpixel($img, $x + $px, $y + $py, $c);
}
}
}
imagedestroy($tmp);
imagedestroy($mask);
} else {
imagecopyresampled($img, $src, $x, $y, 0, 0, $w, $h, $srcW, $srcH);
}
}
/**
* 将颜色字符串解析为 RGB 数组
* 支持 #fff、#ffffff、rgba(r,g,b,a)、rgb(r,g,b)、数组 [r,g,b]
*/
private static function parseColorToRgb($color): array
{
if (is_array($color)) {
$r = (int)($color['r'] ?? $color[0] ?? 51);
$g = (int)($color['g'] ?? $color[1] ?? 51);
$b = (int)($color['b'] ?? $color[2] ?? 51);
return [min(255, max(0, $r)), min(255, max(0, $g)), min(255, max(0, $b))];
}
if (!is_string($color) && !is_scalar($color)) {
return [51, 51, 51];
}
$s = trim((string)$color);
if ($s === '') {
return [51, 51, 51];
}
// rgba(r,g,b,a) 或 rgb(r,g,b)
if (preg_match('/^rgba?\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/i', $s, $m)) {
return [(int)min(255, $m[1]), (int)min(255, $m[2]), (int)min(255, $m[3])];
}
// 仅保留 # 后合法十六进制字符
$hex = preg_replace('/[^0-9a-fA-F]/', '', ltrim($s, '#'));
if (strlen($hex) === 3) {
$hex = $hex[0].$hex[0].$hex[1].$hex[1].$hex[2].$hex[2];
}
if (strlen($hex) !== 6) {
return [51, 51, 51];
}
$r = (int)hexdec(substr($hex, 0, 2));
$g = (int)hexdec(substr($hex, 2, 2));
$b = (int)hexdec(substr($hex, 4, 2));
return [min(255, $r), min(255, $g), min(255, $b)];
}
private static function allocateHexColor($img, $hex): int
{
[$r, $g, $b] = self::parseColorToRgb($hex);
return imagecolorallocate($img, $r, $g, $b);
}
/**
* 根据字体 key 获取字体文件路径；key 为空则返回第一个可用字体
*/
private static function getFontPath(?string $fontKey = null): ?string
{
$base = root_path() . 'public/fonts/';
// 按 key 精确查找
if ($fontKey) {
if (isset(self::FONT_MAP[$fontKey])) {
$p = $base . self::FONT_MAP[$fontKey][1];
if (file_exists($p)) return $p;
}
// 兼容旧字体 key（如 simhei / msyh）
$legacy = $base . $fontKey . '.ttf';
if (file_exists($legacy)) return $legacy;
}
// 回退：按优先级返回第一个可用字体
foreach (self::FONT_MAP as [$name, $file]) {
$p = $base . $file;
if (file_exists($p)) return $p;
}
$fallbacks = [$base . 'simhei.ttf', $base . 'msyh.ttf', '/usr/share/fonts/truetype/wqy/wqy-microhei.ttc'];
foreach ($fallbacks as $p) {
if (file_exists($p)) return $p;
}
return null;
}
private static function drawText($img, int $x, int $y, string $text, int $color, int $size = 14): void
{
$font = self::getFontPath();
if ($font && function_exists('imagettftext')) {
imagettftext($img, $size, 0, $x, $y + $size, $color, $font, $text);
} else {
$f = $size <= 12 ? 4 : 5;
imagestring($img, $f, $x, $y, preg_replace('/[^\x20-\x7e]/', '', $text) ?: $text, $color);
}
}
/**
* 合成推广海报 PNG 二进制
* @param array $user 当前用户 {id, nickname, avatar}
* @param string $qrBinary 小程序码 PNG 二进制
* @param string|null $avatarBinary 头像二进制（已下载），为空则跳过
*/
public static function build(array $user, string $qrBinary, ?string $avatarBinary = null): string
{
$w = self::WIDTH;
$h = self::HEIGHT;
$img = imagecreatetruecolor($w, $h);
if (!$img) {
throw new \RuntimeException('GD image create failed');
}
imagesavealpha($img, true);
imagealphablending($img, true);
self::drawGradient($img, 0, 0, $w, (int)($h * 0.45), [0xFF, 0xD1, 0xE3], [0xE9, 0xD5, 0xFF]);
$white = imagecolorallocate($img, 255, 255, 255);
imagefilledrectangle($img, 0, (int)($h * 0.4), $w, $h, $white);
$primary = imagecolorallocate($img, 244, 63, 94);
$secondary = imagecolorallocate($img, 139, 92, 246);
$orange = imagecolorallocate($img, 249, 115, 22);
$dark = imagecolorallocate($img, 30, 41, 59);
$gray = imagecolorallocate($img, 100, 116, 139);
$lightGray = imagecolorallocate($img, 148, 163, 184);
$cx = (int)($w / 2);
self::drawRoundedRect($img, 30, 50, 60, 20, 10, imagecolorallocatealpha($img, 255, 255, 255, 80));
self::drawRoundedRect($img, 130, 50, 60, 20, 10, $primary);
self::drawText($img, 45, 52, '专业分析', $primary, 10);
self::drawText($img, 145, 52, '结果精准', $white, 10);
self::drawText($img, $cx - 80, 100, 'MBTI 神仙测试', $dark, 22);
self::drawRoundedRect($img, $cx - 80, 150, 65, 24, 8, imagecolorallocatealpha($img, 255, 255, 255, 50));
self::drawRoundedRect($img, $cx + 5, 150, 65, 24, 8, imagecolorallocatealpha($img, 255, 255, 255, 50));
self::drawText($img, $cx - 70, 155, 'INTJ', $primary, 10);
self::drawText($img, $cx - 45, 155, '战略家', $gray, 10);
self::drawText($img, $cx + 15, 155, 'PDP', $secondary, 10);
self::drawText($img, $cx + 40, 155, '猫头鹰', $gray, 10);
$gridY = 220;
$gridW = (int)(($w - 80) / 3);
self::drawStatCard($img, 30, $gridY, $gridW, 70, '100+', '性格档案', $primary);
self::drawStatCard($img, 30 + $gridW + 10, $gridY, $gridW, 70, '0%', '好友折扣', $secondary);
self::drawStatCard($img, 30 + ($gridW + 10) * 2, $gridY, $gridW, 70, '90%', '收益分红', $orange);
$cardY = 320;
self::drawRoundedRect($img, 30, $cardY, $w - 60, 180, 20, $white);
imagefilledrectangle($img, 45, $cardY + 18, 49, $cardY + 34, $primary);
self::drawText($img, 55, $cardY + 15, '完整版性格深度解析', $dark, 12);
$bullets = [
'你的决策风格在高压场景下会如何变化？',
'在团队中更适合担当怎样的关键角色？',
'哪些性格盲区最容易拖累你的发展？',
];
foreach ($bullets as $i => $t) {
self::drawText($img, 50, $cardY + 50 + $i * 28, '• ' . $t, $gray, 10);
}
$recY = 530;
self::drawRoundedRect($img, $cx - 100, $recY, 200, 36, 18, imagecolorallocate($img, 248, 250, 252));
if ($avatarBinary) {
$avatar = @imagecreatefromstring($avatarBinary);
if ($avatar) {
imagecopyresampled($img, $avatar, $cx - 92, $recY + 6, 0, 0, 24, 24, imagesx($avatar), imagesy($avatar));
imagedestroy($avatar);
}
}
$nickname = mb_substr($user['nickname'] ?? '好友', 0, 8);
self::drawText($img, $cx - 95, $recY + 12, '由 ' . $nickname . ' 推荐给你', $gray, 10);
$qrY = 620;
$qrImg = @imagecreatefromstring($qrBinary);
if ($qrImg) {
$qrSize = 88;
$qrX = $cx - (int)($qrSize / 2);
imagecopyresampled($img, $qrImg, $qrX, $qrY + 6, 0, 0, $qrSize, $qrSize, imagesx($qrImg), imagesy($qrImg));
imagedestroy($qrImg);
}
self::drawText($img, $cx - 80, $qrY + 100, '扫码解锁完整报告', $lightGray, 10);
$inviteCode = 'MBTI-' . ($user['id'] ?? '888');
self::drawText($img, $cx - 60, $qrY + 125, '邀请码 ' . $inviteCode, $primary, 11);
ob_start();
imagepng($img);
$png = ob_get_clean();
imagedestroy($img);
return $png ?: '';
}
private static function drawGradient($img, $x, $y, $w, $h, array $from, array $to): void
{
for ($i = 0; $i < $h; $i++) {
$r = (int)($from[0] + ($to[0] - $from[0]) * $i / $h);
$g = (int)($from[1] + ($to[1] - $from[1]) * $i / $h);
$b = (int)($from[2] + ($to[2] - $from[2]) * $i / $h);
$c = imagecolorallocate($img, max(0, min(255, $r)), max(0, min(255, $g)), max(0, min(255, $b)));
imagefilledrectangle($img, $x, $y + $i, $x + $w - 1, $y + $i, $c);
}
}
private static function drawRoundedRect($img, $x, $y, $w, $h, $r, $color): void
{
imagefilledrectangle($img, $x + $r, $y, $x + $w - $r - 1, $y + $h - 1, $color);
imagefilledrectangle($img, $x, $y + $r, $x + $w - 1, $y + $h - $r - 1, $color);
imagefilledellipse($img, $x + $r, $y + $r, $r * 2, $r * 2, $color);
imagefilledellipse($img, $x + $w - $r - 1, $y + $r, $r * 2, $r * 2, $color);
imagefilledellipse($img, $x + $r, $y + $h - $r - 1, $r * 2, $r * 2, $color);
imagefilledellipse($img, $x + $w - $r - 1, $y + $h - $r - 1, $r * 2, $r * 2, $color);
}
private static function drawStatCard($img, $x, $y, $w, $h, string $val, string $label, int $color): void
{
$white = imagecolorallocate($img, 255, 255, 255);
self::drawRoundedRect($img, $x, $y, $w, $h, 15, $white);
$gray = imagecolorallocate($img, 148, 163, 184);
$lw = imagefontwidth(5) * strlen($val);
imagestring($img, 5, $x + ($w - $lw) / 2, $y + 20, $val, $color);
$lw2 = imagefontwidth(4) * strlen($label);
imagestring($img, 4, $x + ($w - $lw2) / 2, $y + 45, $label, $gray);
}
/**
* 下载远程图片为二进制
*/
public static function fetchImage(string $url): ?string
{
$url = str_replace('http://', 'https://', $url);
$ctx = stream_context_create(['http' => ['timeout' => 10]]);
$bin = @file_get_contents($url, false, $ctx);
return $bin !== false ? $bin : null;
}
}