打印 $_POST 变量名和值 [英] Print $_POST variable name along with value

问题描述

我在 PHP 中有一个 POST，我并不总是知道我将要处理的变量字段的名称.

I have a POST in PHP for which I won't always know the names of the variable fields I will be processing.

我有一个函数可以循环遍历这些值(但是我也想捕获与之相关的变量名称.)

I have a function that will loop through the values (however I would also like to capture the variable name that goes with it.)

foreach ($_POST as $entry)
{
     print $entry . "<br>";
}

一旦我弄清楚如何获取变量名称，我还需要弄清楚如何使函数足够智能，以检测并遍历存在变量的数组(即，如果我有一些复选框值.)

Once I figure out how to grab the variable names, I also need to figure out how I can make the function smart enough to detect and loop through arrays for a variable if they are present (i.e. if I have some checkbox values.)

推荐答案

如果您只想打印整个 $_POST 数组以验证您的数据是否正确发送，请使用 print_r:

If you just want to print the entire $_POST array to verify your data is being sent correctly, use print_r:

print_r($_POST);

递归打印数组的内容:

printArray($_POST);

function printArray($array){
     foreach ($array as $key => $value){
        echo "$key => $value";
        if(is_array($value)){ //If $value is an array, print it as well!
            printArray($value);
        }  
    } 
}

对嵌套数组应用一些填充:

Apply some padding to nested arrays:

printArray($_POST);

/*
 * $pad='' gives $pad a default value, meaning we don't have 
 * to pass printArray a value for it if we don't want to if we're
 * happy with the given default value (no padding)
 */
function printArray($array, $pad=''){
     foreach ($array as $key => $value){
        echo $pad . "$key => $value";
        if(is_array($value)){
            printArray($value, $pad.' ');
        }  
    } 
}

is_array 如果给定变量是数组，则返回 true.

is_array returns true if the given variable is an array.

您也可以使用 array_keys 返回所有字符串名称.

You can also use array_keys which will return all the string names.

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