fenleixinxi/tools/download_and_crop_real_photos.php

<?php
/**
 * 下载真实商业实拍照片并居中裁剪为 240x240 JPEG (12KB~18KB)，模拟后台真实上传
 */

$targetDir = __DIR__ . '/../public/uploads/20261028';
if (!is_dir($targetDir)) {
    mkdir($targetDir, 0755, true);
}

// 13个子分类真实图源 (Unsplash 真实摄影图)
$realPhotos = [
    // 招聘专区 (PID: 25)
    [
        'id'       => 27,
        'name'     => '普工技工',
        'filename' => 'job-tech.jpg',
        'url'      => 'https://images.unsplash.com/photo-1504917599217-d4dc5ebe6122?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 28,
        'name'     => '餐饮服务',
        'filename' => 'job-catering.jpg',
        'url'      => 'https://images.unsplash.com/photo-1577219491135-ce391730fb2c?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 29,
        'name'     => '家政保洁',
        'filename' => 'job-clean.jpg',
        'url'      => 'https://images.unsplash.com/photo-1581578731548-c64695cc6952?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 30,
        'name'     => '骑手配送',
        'filename' => 'job-rider.jpg',
        'url'      => 'https://images.unsplash.com/photo-1526367790999-0150786686a2?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 31,
        'name'     => '销售客服',
        'filename' => 'job-sales.jpg',
        'url'      => 'https://images.unsplash.com/photo-1534536281715-e28d76689b4d?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 32,
        'name'     => '司机出行',
        'filename' => 'job-driver.jpg',
        'url'      => 'https://images.unsplash.com/photo-1449965408869-eaa3f722e40d?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 33,
        'name'     => '教育培训',
        'filename' => 'job-edu.jpg',
        'url'      => 'https://images.unsplash.com/photo-1509062522246-3755977927d7?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 34,
        'name'     => '兼职短工',
        'filename' => 'job-parttime.jpg',
        'url'      => 'https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?w=500&q=80&auto=format&fit=crop',
    ],
    // 肉蛋家禽 (PID: 26)
    [
        'id'       => 35,
        'name'     => '鲜土鸡蛋',
        'filename' => 'poultry-egg.jpg',
        'url'      => 'https://images.unsplash.com/photo-1582722872445-44dc5f7e3c8f?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 36,
        'name'     => '散养土鸡',
        'filename' => 'poultry-chicken.jpg',
        'url'      => 'https://images.unsplash.com/photo-1548550023-2bdb3c5beed7?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 37,
        'name'     => '生鲜猪肉',
        'filename' => 'poultry-pork.jpg',
        'url'      => 'https://images.unsplash.com/photo-1607623814075-e51df1bdc82f?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 38,
        'name'     => '高山牛肉',
        'filename' => 'poultry-beef.jpg',
        'url'      => 'https://images.unsplash.com/photo-1558030006-450675393462?w=500&q=80&auto=format&fit=crop',
    ],
    [
        'id'       => 39,
        'name'     => '鲜活水产',
        'filename' => 'poultry-fish.jpg',
        'url'      => 'https://images.unsplash.com/photo-1534043464124-3be32fe00099?w=500&q=80&auto=format&fit=crop',
    ],
];

/**
 * 将图片内容居中裁剪为 240x240 并输出 JPEG
 *
 * @param string $binaryData 原始图片二进制流
 * @param string $savePath 目标保存路径
 * @return bool
 */
function cropToSquare240($binaryData, $savePath)
{
    $src = @imagecreatefromstring($binaryData);
    if (!$src) {
        return false;
    }

    $srcW = imagesx($src);
    $srcH = imagesy($src);

    // 确定正方形裁剪区域（居中裁剪）
    $cropSize = min($srcW, $srcH);
    $cropX = (int)(($srcW - $cropSize) / 2);
    $cropY = (int)(($srcH - $cropSize) / 2);

    $dst = imagecreatetruecolor(240, 240);
    // 高质量重采样
    imagecopyresampled($dst, $src, 0, 0, $cropX, $cropY, 240, 240, $cropSize, $cropSize);

    // 以 82% 质量保存 JPEG，保证实拍细节同时体积控制在 15KB 左右
    $res = imagejpeg($dst, $savePath, 82);

    imagedestroy($src);
    imagedestroy($dst);
    return $res;
}

echo "=== 开始获取真实摄影照片并裁剪为 240x240 实拍图 ===\n";

$results = [];

foreach ($realPhotos as $item) {
    echo "正在下载 [{$item['name']}] 真实实拍照: {$item['url']} ...\n";

    $opts = [
        'http' => [
            'method'  => 'GET',
            'header'  => "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)\r\n",
            'timeout' => 15,
        ]
    ];
    $context = stream_context_create($opts);
    $raw = @file_get_contents($item['url'], false, $context);

    if (!$raw) {
        echo "  ✗ 下载失败，跳过: {$item['name']}\n";
        continue;
    }

    // 生成 MD5 哈希文件名
    $tmpName = md5($raw . $item['name']) . '.jpg';
    $saveAbs = $targetDir . '/' . $tmpName;

    if (cropToSquare240($raw, $saveAbs)) {
        $finalSize = filesize($saveAbs);
        $url = '/uploads/20261028/' . $tmpName;
        echo "  ✓ 成功生成 240x240 真实照片: {$url} (大小: " . round($finalSize / 1024, 2) . " KB)\n";

        $results[] = [
            'id'       => $item['id'],
            'name'     => $item['name'],
            'filename' => $item['filename'],
            'local'    => $saveAbs,
            'rel_url'  => $url,
            'size'     => $finalSize,
            'sha1'     => sha1_file($saveAbs),
        ];
    } else {
        echo "  ✗ 裁剪失败: {$item['name']}\n";
    }
}

// 将结果输出到 JSON 临时文件供下一步同步脚本读取
file_put_contents(__DIR__ . '/real_photos_result.json', json_encode($results, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT));
echo "\n已成功生成 " . count($results) . " 张真实二级分类实拍图！\n";