arry to string php

<?php

$arr = array('Hello','World!','Beautiful','Day!');

echo implode(" ",$arr);

?> 

Using implode() function in Php
-----------------------
Syntax
implode(separator,array);  

Example
<?php  
//assigning value to the array  
$dummyArr = array("Hello","Greppers,","Ankur","here !");  
  
echo implode(" ",$dummyArr);// Use of implode function  
?>  
  
Output:
Hello Greppers, Ankur here !

$gadget = array( 'computer', 'mobile', 'tablet' );
echo implode($arr);

$person = [
    'name' => 'Jon',
    'age' => 26,
    'status' => null,
    'friends' => ['Matt', 'Kaci', 'Jess']
];

echo json_encode($person);
// {"name":"Jon","age":26,"status":null,"friends":["Matt","Kaci","Jess"]}

implode("|",$type);

function subArraysToString($ar, $sep = ', ') {
    $str = '';
    foreach ($ar as $val) {
        $str .= implode($sep, $val);
        $str .= $sep; // add separator between sub-arrays
    }
    $str = rtrim($str, $sep); // remove last separator
    return $str;
}

// $food array from example above
echo subArraysToString($food);
// apple, raspberry, pear, banana, peas, carrots, cabbage, wheat, rice, oats