将 SELECT 查询的结果打印为 PHP 中的预格式化文本? [英] Print results of a SELECT query as preformatted text in PHP?

问题描述

我正在寻找一种简单快捷的方法来将 PHP 中 MySQL SELECT 查询的结果打印为预格式化文本.我想要的是能够将查询对象传递给函数并像运行 SELECT 语句时命令行 MySQL 客户端那样获取记录集的打印输出.

I'm looking for an easy and quick way to print out the results of a MySQL SELECT query in PHP as preformatted text. What I would like is to be able to pass a query object to a function and get a printout of the recordset like the command line MySQL client does when running SELECT statements.

这是我希望它的外观示例(即 ASCII):

Here is an example of how I want it to look (i.e. ASCII):

+----+-------------+
| id | countryCode |
+----+-------------+
|  1 | ES          |
|  2 | AN          |
|  3 | AF          |
|  4 | AX          |
|  5 | AL          |
|  6 | DZ          |
|  7 | AS          |
|  8 | AD          |
|  9 | AO          |
| 10 | AI          |
+----+-------------+

它基本上用于通用导入脚本，我正在执行 SELECT 查询并希望向用户显示结果以供确认.

It's basically for a generic import script, I am doing a SELECT query and want to display the results to the user for confirmation.

推荐答案

sprintf 是你的朋友，如果你必须有一个非 HTML 固定宽度的输出.

sprintf is your friend, if you must have a non-HTML fixed width output.

预计到达时间:

//id: integer, max width 10
//code: string max width 2

$divider=sprintf("+%-10s+%-13s+",'-','-');

$lines[]=$divider;
$lines[]=sprintf("|%10s|%13s|",'id','countryCode'); //header
$lines[]=$divider;

while($line=$records->fetch_assoc()) {
    //store the formatted output
    $lines[]=sprintf("| %10u | %2.2s |", $line['id'],$line['code']);
}
$table=implode("\n",$lines);
echo $table;

如果您想立即打印出来而不是存储结果，请改用 printf - 相同的语法.有一个合理的 PHP (s)printf 教程 here.

If you want to print out immediately instead of storing the results, use printf instead- same syntax. There is a reasonable PHP (s)printf tutorial here.

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