当我单击导出时，phpmyadmin 中会发生此错误

Question

./../../php/tcpdf/include/tcpdf_fonts.php#1671 中的警告 chr() 期望参数 1 为 int，给定字符串回溯tcpdf_fonts.php#1671: chr(string '') tcpdf_fonts.php#1803: TCPDF_FONTS::unichr( string '', boolean true, ) tcpdf_fonts.php#2095: TCPDF_FONTS::UTF8ArrSubString( array, integer 0, integer 1, boolean true, ) tcpdf.php#1960: TCPDF_FONTS::utf8Bidi(array, string '', boolean false, boolean true, NULL, ) ./libraries/classes/Pdf.php#50: TCPDF->__construct( string 'L '，字符串 'pt'，字符串 'A3'，布尔值 true，字符串 'UTF-8'，布尔值 false，布尔值 false，) ./libraries/classes/Plugins/Export/Helpers/Pdf.php#58: PhpMyAdmin\Pdf ->__construct（字符串'L'，字符串'pt'，字符串'A3'，布尔真，字符串'UTF-8'，布尔假，布尔假，）./libraries/classes/Plugins/Export/ExportPdf.php# 70：PhpMyAdmin\Plugins\Export\Helpers\Pdf->__construct（字符串'L'，字符串'pt'，字符串'A3'，）./libraries/classes/Plugins/Export/ExportPdf.php#55：PhpMyAdmin\Plugins\Export \ExportPdf->initSpecificVariables()在此处输入图像描述 ./libraries/classes/Plugins.php#99: PhpMyAdmin\Plugins\Export\ExportPdf->__construct() ./libraries/classes/Display/Export.php#677: PhpMyAdmin\Plugins::getPlugins( string 'export', string 'libraries/classes/Plugins/Export/', array, ) ./db_export.php#147: PhpMyAdmin\Display\Export->getDisplay( string 'database', string 'wordpress', string '', string '', integer 14, integer 0, string 'TablesStructureDataSelect all wp_commentmetawp_commentswp_linkswp_optionswp_postmetawp_postswp_termmetawp_termswp_term_relationshipswp_term_taxonomywp_usermetawp_userswp_yoast_seo_linkswp_yoast_seo_meta ', )

Answer 1

运行此命令：

sudo nano +1671 /usr/share/php/tcpdf/include/tcpdf_fonts.php

is_numeric($c)在公共方法主体中添加此条件，因此更改：

public static function unichr($c, $unicode=true) {

    if (!$unicode) {

        return chr($c);

    } elseif ($c <= 0x7F) {

        // one byte

        return chr($c);

    } elseif ($c <= 0x7FF) {

        // two bytes

        return chr(0xC0 | $c >> 6).chr(0x80 | $c & 0x3F);

    } elseif ($c <= 0xFFFF) {

        // three bytes

        return chr(0xE0 | $c >> 12).chr(0x80 | $c >> 6 & 0x3F).chr(0x80 | $c & 0x3F);

    } elseif ($c <= 0x10FFFF) {

        // four bytes

        return chr(0xF0 | $c >> 18).chr(0x80 | $c >> 12 & 0x3F).chr(0x80 | $c >> 6 & 0x3F).chr(0x80 | $c & 0x3F);

    } else {

        return '';

    }

}

至

public static function unichr($c, $unicode=true) {

    if (is_numeric($c)){

        if (!$unicode) {

            return chr($c);

        } elseif ($c <= 0x7F) {

            // one byte

            return chr($c);

        } elseif ($c <= 0x7FF) {

            // two bytes

            return chr(0xC0 | $c >> 6).chr(0x80 | $c & 0x3F);

        } elseif ($c <= 0xFFFF) {

            // three bytes

            return chr(0xE0 | $c >> 12).chr(0x80 | $c >> 6 & 0x3F).chr(0x80 | $c & 0x3F);

        } elseif ($c <= 0x10FFFF) {

            // four bytes

            return chr(0xF0 | $c >> 18).chr(0x80 | $c >> 12 & 0x3F).chr(0x80 | $c >> 6 & 0x3F).chr(0x80 | $c & 0x3F);

        } else {

            return '';

        }

    }

}

Answer 2

我已经解决了这个问题，我只是升级了 PHPMyAdmin 和 MYSQL 最新版本。

Answer 3

一种快速的解决方案是降级您的 PHP 版本，假设您在 PHP 7.4 上运行。或者参考这个 URL https://github.com/tecnickcom/TCPPDF/pull/123/commits/34eb0dff48eb0b0d5f38f4cfd92ef6d47aefc8b4

使用 TCPDF 修复了此错误