foreach 取某几行的值

Question

[
{"tag":"text1","num":"1"},
{"tag":"text2","num":"2"},
{"tag":"text3","num":"3"},
{"tag":"text4","num":"4"},
{"tag":"text5","num":"5"},
          ... ...
{"tag":"text100","num":"100"}
]上面是一个简单的JSON文件。如何用json_decode和foreach，读取第11个到第20个值？谢谢。<?php
$body = file_get_contents('json.txt');
$data = json_decode($body,true);
foreach($data as $json){
if($json['num']=='1'){
break;
}
if($json['num']=='11'){
continue;
}
echo $json['num'].'|'.$json['tag'].'<br />';
if($json['num']=='20'){
break;
}
}
?>

Answer 1

$body = file_get_contents('json.txt');
$data = json_decode($body,true);
foreach($data as $json){
  if($json['num']<'11' || $json['num']>'20' ){
    continue;
  }
  echo $json['num'].'|'.$json['tag'].'<br />';
}

Answer 2

哈，有道理，我怎么没想到直接利用continue;？
谢谢斑竹。