How to convert php multidimensional array to string

How to convert a multi-dimensional array into a string in php: first create a PHP sample file and create a two-dimensional array; then traverse and reassemble the two-dimensional array and reduce the dimension into a one-dimensional array; finally use implode() to One-dimensional arrays can be assembled into strings at specified intervals.

The operating environment of this article: Windows7 system, PHP7.1 version, DELL G3 computer

php How to convert multi-dimensional array to string ?

PHP converts a two-dimensional array into a string

The code is as follows:

["arr"]=>
      array(2) {
        [0]=>
        array(1) {
          ["url"]=>
          string(7) "地址1"
        }
        [1]=>
        array(1) {
          ["url"]=>
          string(7) "地址2"
        }
      }

Traverse and reassemble the two-dimensional array

foreach ($arr as $val) {
    $val = join(",",$val);
    $temp_array[] = $val;
}

Dimensionality reduction It becomes a one-dimensional array

array(2) {
  [0]=>
  string(7) "地址1"
  [1]=>
  string(7) "地址2"
}

PHP’s own function implode() can assemble the one-dimensional array into a string at specified intervals

$str = implode(",", $temp_array);

Assembly completed

string(15) "地址1,地址2"

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