$pizza  = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);echo $pieces[0]; 
// piece1echo $pieces[1];
 // piece2// 示例 2$data = "foo:*:1023:1000::/home/foo:/bin/sh";
 list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data);
 echo $user; 
 // fooecho $pass;
  // *

var_dump( explode('','asdasd') );
//Warning: explode(): Empty delimiter in /tmp/e80c9663-e392-4f81-8347-35726052678f/code on line 3//bool(false)

$date = "04/30/1973";list($month, $day, $year) = split ('[/.-]', $date);
echo "Month: $month; Day: $day; 
Year: $year<br />\n";
//PHP 7 下的报错Fatal error: Uncaught Error: Call to undefined function split() in /tmp/4d38c290-b4cb-43f5-846a-9fa90784a090/code:4Stack trace:
#0 {main}
  thrown in /tmp/4d38c290-b4cb-43f5-846a-9fa90784a090/code on line 4//PHP 5.6 下返回正常Month: 04; 
  Day: 30; 
  Year: 1973

$arr='2016\8\11';$rearr = split ('[/\]', $arr);
var_dump($rearr)/*
array(3) {
  [0]=>
  string(4) "2016"
  [1]=>
  string(1) "8"
  [2]=>
  string(2) "11"
}
*/