<?php
$array = array('lastname', 'email', 'phone');
$comma_separated = implode(",", $array);
echo $comma_separated;
// lastname,email,phone
?>$gadget = array( 'computer', 'mobile', 'tablet' );
echo implode($arr);phpCopy<?php
$array = ["Lili", "Rose", "Jasmine", "Daisy"];
$JsonObject = json_encode($array);
echo "The array is converted to the Json string.";
echo "\n";
echo"The Json string is $JsonObject";
?>
$integerIDs = array_map('intval', explode(',', $string));phpCopy<?php
$array = ["Lili", "Rose", "Jasmine", "Daisy"];
$JsonObject = serialize($array);
echo "The array is converted to the Json string.";
echo "\n";
echo"The Json string is $JsonObject";
?>
// for one-dimentional arrays
$str = implode('|', $arr); // "v1|v2|v3"...
// for multi-dimensional/structured arrays, or to keep hierarchy
$str = json_encode($arr);
// or
$str = var_export($arr);