PHP traversal array Output As string example

Example

?
foreach ($res [' matches '] as $value) {
$arr [] = $value [' id '];//to turn the traversal array into a new array
}
$str = Implode (', ', $arr);//combine array elements into a single string
Echo $str;
?>

Analysis Example foreach

The foreach function is the traversal

foreach ($array as $key => $value)
{
......
}

Traverses the given array_expression array. In each loop, the value of the current cell is assigned to the $value and the pointer inside the array moves forward one step (so the next cell will be given in the next loop)

The implode function is to combine the array into a string by a specified character

The implode () function combines array elements into a single string.