notice 3a array to string conversion php

1Using implode() function in Php
2-----------------------
3Syntax
4implode(separator,array);  
5
6Example
7<?php  
8//assigning value to the array  
9$dummyArr = array("Hello","Greppers,","Ankur","here !");  
10  
11echo implode(" ",$dummyArr);// Use of implode function  
12?>  
13  
14Output:
15Hello Greppers, Ankur here !

1// Use json_encode to collapse the array to json string:
2$stuff = array(1,2,3);
3print json_encode($stuff);   //Prints [1,2,3]

1// use the builtin php function print_r or var_dump:
2$stuff = array(1,2,3);
3print_r($stuff);
4$stuff = array(3,4,5);
5var_dump($stuff);

1$stuff = array(1,2,3);
2print_r($stuff);
3$stuff = array(3,4,5);
4var_dump($stuff);

1// Joining all the cells in the array together:
2<?php
3    $stuff = array(1,2,3);
4    print implode(", ", $stuff);    //prints 1, 2, 3
5    print join(',', $stuff);        //prints 1, 2, 3
6?>

1// suppress the Notices:
2error_reporting(0);
3print(array(1,2,3));    //Prints 'Array' without a Notice.