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演示数组函数
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演示数组函数

栈的操作

  1. <?php
  2. // 栈操作
  3. $arr = [];
  4. // 尾部添加
  5. array_push($arr,'id',1);
  6. printf('<pre>%s<pre>',print_r($arr,true));
  7. echo '<br>';
  8. // 尾部删除
  9. array_pop($arr);
  10. print_r($arr);
  11. // printf('<pre>%s<pre>',print_r($arr,true));
  12. // 头部增加
  13. array_unshift($arr,'name');
  14. print_r($arr);
  15. // 头部删除
  16. array_shift($arr);
  17. print_r($arr);
  18. // 排序按值
  19. // 正常由低到高
  20. $res =[3,6,9,8.9,66,'name','ABC'];
  21. sort($res);
  22. printf('<pre>%s<pre>',print_r($res,true));
  23. // 由高到低
  24. rsort($res);
  25. print_r($res);
  26. // 降序但是索引不变
  27. $res =[3,6,9,8.9,66,'name','ABC'];
  28. arsort($res);
  29. print_r($res);
  30. // 排序按键
  31. // 按键由低到高
  32. $res =["b"=>'bag',"f"=>0,"a"=>3.5];
  33. ksort($res);
  34. print_r($res);
  35. // 按键由高到低
  36. krsort($res);
  37. print_r($res);
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