用变量创建数组

Question

如何创建带有变量的数组？示例：

$id=1;
$query=$db->prepare("SELECT * FROM number_table WHERE scheme_id='61d4359c6a205'");
$query->execute();
while ($exe=$query->fetch(PDO::FETCH_ASSOC)) { $id++; 
                                                                        
    $numbers .= '"'.$exe['number_id'].'"=>"'.$exe['number_value'].'", ';
                                                    
}

echo $numbers; //output "2090"=>"15", "1501=>"16", "4561"=>"17", "6287"=>"12",

$arr_numbers = array($numbers);
print_r($arr_numbers); // output Array ( [0] => "2090"=>"15", "1501"=>"16", "4561"=>"17", "6287"=>"17",)  that output is not what i want.

我想做这样的事情。但是我的代码不起作用。

Answer 1

从字符串创建一个数组，无论格式如何，它都会用该字符串创建一个单元素数组 array('[0] => "test"') ==> [0] => '[0] => "test"'

尝试在循环中创建数组，你不需要任何其他东西:

while ($exe=$query->fetch(PDO::FETCH_ASSOC)) { $id++;                                                                         
    $arr_numbers[$exe['number_id']]=$exe['number_value'];                                                 
}
print_r($arr_numbers);

用变量创建数组

Creating Array with variable

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arrays

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