PHP项目数字蒙特塞拉特与eXCD

本文目录导读：

1. 数字蒙特塞拉特字体（Montserrat）
2. eXCD（超额编码十进制）

我来帮您分析PHP项目中的数字蒙特塞拉特（Montserrat）字体与eXCD（超额编码十进制）的相关问题，这两个概念在PHP项目中通常涉及不同的用途：

数字蒙特塞拉特字体（Montserrat）

字体引入方式

// 方法1：通过Google Fonts引入
echo '<link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700;900&display=swap" rel="stylesheet">';
// 方法2：本地字体文件
function loadMontserratFont() {
    echo '<style>
        @font-face {
            font-family: "Montserrat";
            src: url("/fonts/Montserrat-Regular.woff2") format("woff2"),
                 url("/fonts/Montserrat-Regular.woff") format("woff");
            font-weight: 400;
            font-style: normal;
        }
        @font-face {
            font-family: "Montserrat";
            src: url("/fonts/Montserrat-Bold.woff2") format("woff2"),
                 url("/fonts/Montserrat-Bold.woff") format("woff");
            font-weight: 700;
        }
        @font-face {
            font-family: "Montserrat";
            src: url("/fonts/Montserrat-Black.woff2") format("woff2"),
                 url("/fonts/Montserrat-Black.woff") format("woff");
            font-weight: 900;
        }
    </style>';
}

数字显示优化

// 使用Montserrat数字的CSS类
class NumberFormatter {
    public static function getMontserratNumberStyle() {
        return '
            .montserrat-number {
                font-family: "Montserrat", sans-serif;
                font-variant-numeric: lining-nums proportional-nums;
                -moz-font-feature-settings: "lnum", "pnum";
                -webkit-font-feature-settings: "lnum", "pnum";
                font-feature-settings: "lnum", "pnum";
            }
        ';
    }
    public static function formatNumber($number) {
        return '<span class="montserrat-number">' . number_format($number) . '</span>';
    }
}

eXCD（超额编码十进制）

eXCD编码/解码器

class EXCDEncoder {
    private $baseChars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
    // 编码函数
    public function encode($number) {
        if (!is_numeric($number) || $number < 0) {
            throw new InvalidArgumentException('输入必须是正整数');
        }
        if ($number == 0) return '0';
        $result = '';
        $base = strlen($this->baseChars);
        while ($number > 0) {
            $remainder = $number % $base;
            $result = $this->baseChars[$remainder] . $result;
            $number = intdiv($number, $base);
        }
        return $result;
    }
    // 解码函数
    public function decode($encodedString) {
        if (!is_string($encodedString) || empty($encodedString)) {
            throw new InvalidArgumentException('输入必须是非空字符串');
        }
        $result = 0;
        $base = strlen($this->baseChars);
        $len = strlen($encodedString);
        for ($i = 0; $i < $len; $i++) {
            $char = $encodedString[$i];
            $position = strpos($this->baseChars, $char);
            if ($position === false) {
                throw new InvalidArgumentException("无效字符: $char");
            }
            $result = $result * $base + $position;
        }
        return $result;
    }
    // 带校验的编码
    public function encodeWithChecksum($number) {
        $encoded = $this->encode($number);
        $checksum = $this->calculateChecksum($encoded);
        return $encoded . $checksum;
    }
    // 校验和计算
    private function calculateChecksum($data) {
        $sum = 0;
        for ($i = 0; $i < strlen($data); $i++) {
            $sum += ord($data[$i]);
        }
        return $this->baseChars[$sum % strlen($this->baseChars)];
    }
}

eXCD在数据库中的应用

class EXCDDatabaseHandler {
    private $encoder;
    private $db;
    public function __construct($dbConnection) {
        $this->encoder = new EXCDEncoder();
        $this->db = $dbConnection;
    }
    // 存储ID的eXCD编码
    public function storeEncodedId($table, $recordId) {
        $encodedId = $this->encoder->encode($recordId);
        $stmt = $this->db->prepare("UPDATE $table SET encoded_id = ? WHERE id = ?");
        $stmt->execute([$encodedId, $recordId]);
        return $encodedId;
    }
    // 通过编码ID查询
    public function findByEncodedId($table, $encodedId) {
        $decodedId = $this->encoder->decode($encodedId);
        $stmt = $this->db->prepare("SELECT * FROM $table WHERE id = ?");
        $stmt->execute([$decodedId]);
        return $stmt->fetch(PDO::FETCH_ASSOC);
    }
}

混合使用示例

class MontserratEXCDDisplay {
    private $encoder;
    public function __construct() {
        $this->encoder = new EXCDEncoder();
    }
    public function displayEncodedNumber($number) {
        $encoded = $this->encoder->encode($number);
        return sprintf(
            '<div class="number-display">
                <span class="montserrat-number original">%s</span>
                <span class="montserrat-number encoded">%s</span>
                <span class="label">原始数字</span>
                <span class="label">eXCD编码</span>
            </div>',
            number_format($number),
            $encoded
        );
    }
    // 批量显示
    public function displayNumberList(array $numbers) {
        $output = '<div class="number-list">';
        foreach ($numbers as $number) {
            $output .= $this->displayEncodedNumber($number);
        }
        $output .= '</div>';
        return $output;
    }
}

前端样式整合

/* montserrat-excd.css */
.number-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 10px;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.montserrat-number {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.5em;
    margin: 5px 0;
}
.montserrat-number.original {
    font-size: 2em;
    color: #ffd700;
}
.montserrat-number.encoded {
    font-size: 1.8em;
    color: #98fb98;
}
.label {
    font-family: 'Montserrat', sans-serif;
    font-weight: 400;
    font-size: 0.8em;
    opacity: 0.8;
    margin-top: 2px;
}

这个实现提供了完整的Montserrat字体显示和eXCD编码功能,适用于PHP项目中的数字展示和数据编码需求。