php - 如何也将列设置为 Upper 并删除集合 laravel 中的符号 _

Question

所以我想将列名和值设为大写

例子:

$collection = collect([
    ['name' => 'Sally'],
    ['school_name' => 'Arkansas'],
    ['age' => 28]
]);

$flattened = $collection->flatMap(function ($values) {
    return array_map('strtoupper', $values);
});

$flattened->all();

// ['name' => 'SALLY', 'school_name' => 'ARKANSAS', 'age' => '28'];

我也想将 'name, school_name, age' 设为 Upper。该代码仅使值变为上层而不是列名

Answer 1

<?php

$arr = ['name' => 'Sally', 'school_name' => 'Arkansas', 'age' => '28'];

$out = [];
$replace = '';
array_walk($arr, function($val, $key) use (&$out, $replace) {
    $key2 = strtoupper($key);
    $key2 = str_replace('_', $replace, $key2);
    $out[$key2] = strtoupper($val);
});

echo "before:\n";
print_r($arr);

echo "after:\n";
print_r($out);

给出结果:

before:
Array
(
    [name] => Sally
    [school_name] => Arkansas
    [age] => 28
)
after:
Array
(
    [NAME] => SALLY
    [SCHOOLNAME] => ARKANSAS
    [AGE] => 28
)

将 $replace 更改为您想要的任何字符或保留为空字符串以删除下划线。

PHP 手册引用:

1. array_walk
2. strtoupper
3. str_replace
4. Anonymous functions
5. Passing by Reference