php将print_r处理后的数据还原为原始数组的解决方法

PHP print_r方法可以把变量打印显示，使变量易于理解。如果变量是string,integer或float，将打印变量值本身，如果变量是array，将会按照一定格式显示键和元素。object与数组类似。print_r用于打印数组较多。

php原生没有把print_r方法打印后的数据还原为原始数组，因此写了下面这个方法，实现将print_r处理后的数据还原为原始数组。

RestorePrint.class.php

lt;#63;php
/**
 * 将print_r处理后的数据还原为原始数组
 * Date:  2016-10-31
 * Author: fdipzone
 * Ver:   1.0
 */
class RestorePrint{ // class start

  public $res = array();
  protected $dict = array();
  protected $buf = '';
  protected $keyname = '';
  protected $stack = array();

  public function __construct() {
    $this-gt;stack[] = $this-gt;res;
  }

  public function __call($method, $param){
    echo $this-gt;buf .' not defined mehtod:'.$method. ' param:'.implode(',', $param);
  }

  public function set($word, $value=''){
    if(is_array($word)){
      foreach($word as $k=gt;$v){
        $this-gt;set($k, $v);
      }
    }
    $p = $this-gt;dict;
    foreach(str_split($word) as $ch){
      if(!isset($p[$ch])){
        $p[$ch] = array();
      }
      $p = $p[$ch];
    }
    $p['val'] = $value;
    return $this;
  }

  public function parse($str){
    $this-gt;doc = $str;
    $this-gt;len = strlen($str);
    $i = 0;
    while($i lt; $this-gt;len){
      $t = $this-gt;find($this-gt;dict, $i);
      if($t){
        $i = $t;
        $this-gt;buf = '';
      }else{
        $this-gt;buf .= $this-gt;doc{$i++};
      }
    }
  }

  protected function find($p, $i){
    if($i gt;= $this-gt;len){
      return $i;
    }
    $t = 0;
    $n = $this-gt;doc{$i};
    if(isset($p[$n])){
      $t = $this-gt;find($p[$n], $i+1);
    }
    if($t){
      return $t;
    }
    if(isset($p['val'])){
      $arr = explode(',', $p['val']);
      call_user_func_array(array($this, array_shift($arr)), $arr);
      return $i;
    }
    return $t;
  }

  protected function group(){
    if(!$this-gt;keyname){
      return ;
    }
    $cnt = count($this-gt;stack)-1;
    $this-gt;stack[$cnt][$this-gt;keyname] = array();
    $this-gt;stack[] = $this-gt;stack[$cnt][$this-gt;keyname];
    $this-gt;keyname = '';
  }

  protected function brackets($c){
    $cnt = count($this-gt;stack)-1;
    switch($c){
      case ')':
        if($this-gt;keyname){
          $this-gt;stack[$cnt][$this-gt;keyname] = trim($this-gt;buf);
        }
        $this-gt;keyname = '';
        array_pop($this-gt;stack);
        break;

      case '[':
        if($this-gt;keyname){
          $this-gt;stack[$cnt][$this-gt;keyname] = trim($this-gt;buf);
        }
        break;

      case ']':
        $this-gt;keyname = $this-gt;buf;
        break;
    }
    $this-gt;buf = '';
  }

} // class end
#63;gt;

demo.php

lt;#63;php
require 'RestorePrint.class.php';

$print_r_data = lt;lt;lt;TXT
Array
(
  [name] =gt; fdipzone
  [gender] =gt; male
  [age] =gt; 18
  [profession] =gt; programmer
  [detail] =gt; Array(
    [grade] =gt; 1
    [addtime] =gt; 2016-10-31
  )
)
TXT;

// 显示打印的数据
echo '显示打印的数据lt;brgt;';
echo 'lt;pregt;'.$print_r_data.'lt;/pregt;';

$oRestorePrint = new RestorePrint;
$oRestorePrint-gt;set('Array', 'group');
$oRestorePrint-gt;set(' [', 'brackets,[');
$oRestorePrint-gt;set('] =gt; ', 'brackets,]');
$oRestorePrint-gt;set(')', 'brackets,)');

$oRestorePrint-gt;parse($print_r_data);
$result = $oRestorePrint-gt;res;

echo '还原为数组lt;brgt;';
var_dump($result);

#63;gt;

输出：

显示打印的数据

Array
(
nbsp;nbsp;nbsp; [name] =gt; fdipzone
nbsp;nbsp;nbsp; [gender] =gt; male
nbsp;nbsp;nbsp; [age] =gt; 18
nbsp;nbsp;nbsp; [profession] =gt; programmer
nbsp;nbsp;nbsp; [detail] =gt; Array(
nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; [grade] =gt; 1
nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; [addtime] =gt; 2016-10-31
nbsp;nbsp;nbsp; )
)

还原为数组

array (size=5)
'name' =gt; string 'fdipzone' (length=8)
'gender' =gt; string 'male' (length=4)
'age' =gt; string '18' (length=2)
'profession' =gt; string 'programmer' (length=10)
'detail' =gt;nbsp;
array (size=2)
'grade' =gt; string '1' (length=1)
'addtime' =gt; string '2016-10-31' (length=10)

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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