The php array is converted into something like this

An array like thisArray ( [0] => a [1] => s [2] => d [3] => f ) is converted into Array ( '0' => ' a','1' => 's', '2' => 'd', '3' => 'f' ) Is it possible? Please give me guidance

In fact, the process is as follows: two strings $atr = 1,2,3,4 $str=a,b,c,f are converted into array array in one-to-one correspondence ('1'=>'a','2' =>'b','3'=>'c','4'=>'f')

And print out array('1'=>'a','2'=>'b','3'=>'c','4'=>'f'), don't know this Is it easy to understand?

Array ( [0] => a [1] => s [2] => d [3] => f ) is converted into Array ( '0' => ' a','1' => 's', '2' => 'd', '3' => 'f' ) Is it possible? Please give me guidance

This of yours cannot be used

If the key of the array can be converted into Int, it will be converted into a number

You can refer to the manual
http://php.net/manual/zh/lang...

<code>Array ( [0] => a [1] => s [2] => d [3] => f )

</code>

<code>$tmp = array( '0' => 'a','1' => 's', '2' => 'd', '3' => 'f' );
var_dump($tmp);
</code>

The above code shows:

<code>Array ( [0] => a [1] => s [2] => d [3] => f )
</code>

====================dump source code============================

<code> /**
 * 浏览器友好的变量输出
 * @param mixed $var 变量
 * @param boolean $echo 是否输出 默认为true 如果为false 则返回输出字符串
 * @param string $label 标签 默认为空
 * @return void|string
 */
public static function dump($var, $echo = true, $label = null)
{
    $label = (null === $label) ? '' : rtrim($label) . ':';
    ob_start();
    var_dump($var);
    $output = ob_get_clean();
    $output = preg_replace('/\]\=\>\n(\s+)/m', '] => ', $output);
    if (IS_CLI) {
        $output = PHP_EOL . $label . $output . PHP_EOL;
    } else {
        if (!extension_loaded('xdebug')) {
            $output = htmlspecialchars($output, ENT_QUOTES);
        }
        $output = '<pre class="brush:php;toolbar:false">' . $label . $output . '

How did you arrive at this array? ? ! !

Are there commas between parameters?

But this is also an empty array?