tablify.php

function tablify($data, $columns)
{
    $result = [];
    
    // 收集各欄位的最大寬度

    $maxWith = [];

    foreach ($columns as $column) {
        $maxWith[$column] = mb_strwidth($column);
    }

    foreach ($data as $row) {
        foreach ($columns as $column) {
            $cell = $row[$column];

            if (mb_strwidth($cell) > $maxWith[$column]) {
                $maxWith[$column] = mb_strwidth($cell);
            }
        }
    }

    // 建立表格

    $headerRow = [];
    $borderRow = [];

    foreach ($columns as $column) {
        $headerRow[] = mbPad($column, $maxWith[$column]);
        $borderRow[] = str_repeat('-', $maxWith[$column]);
    }

    $result[] = ' ' . implode(' | ', $headerRow) . ' ';
    $result[] = '-' . implode('---', $borderRow) . '-';

    foreach ($data as $row) {
        $dataRow = [];

        foreach ($columns as $column) {
            $cell = $row[$column];
            $dataRow[] = mbPad($cell, $maxWith[$column]);
        }

        $result[] = ' ' . implode(' | ', $dataRow) . ' ';
    }

 
    return implode(PHP_EOL, $result);
}

function mbPad($input, $length, $padChar = ' ', $type = STR_PAD_RIGHT)
{
    $inputWidth = mb_strwidth($input);
    $padCharWidth = mb_strwidth($padChar);

    $delta = $length - $inputWidth;
    $padCount = floor($delta / $padCharWidth);
    $padLeftCount = floor($padCount / 2);
    $padRightCount = ceil($padCount / 2);
    
    $filler = str_repeat($padChar, $padCount);
    $fillerLeft = str_repeat($padChar, $padLeftCount);
    $fillerRight = str_repeat($padChar, $padRightCount);

    switch ($type) {
        case STR_PAD_RIGHT:
            return $input . $filler;
        case STR_PAD_LEFT:
            return $filler . $input;
        case STR_PAD_BOTH:
            return $fillerLeft . $input . $fillerRight;
    }
}

simple plain text table generator in PHP. supports double-width characters.