PHP explode 和 implode 用法

explode

array explode ( string $delimiter , string $string [, int $limit = PHP_INT_MAX ] )

<?php

$str = "hi, jason, world";
print_r(explode(',', $str));
print_r(explode(',', $str, 2));

Array
(
[0] => hi
[1] => jason
[2] => world
)
Array
(
[0] => hi
[1] => jason, world
)

implode

string implode ( string $glue , array $pieces )
string implode ( array $pieces )

<?php

$array = array('hello', 'world', 'is', 'php');
echo implode(' ', $array);
echo "\n";
$array1 = array('a' => 'hello', 'b'=>'world', 'x' => 'jason' );
echo implode(' ', $array1);

hello world is php
hello world jason