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

<?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->stack[] =& $this->res;
 }

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

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

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

 protected function find(&$p, $i){
 if($i >= $this->len){
 return $i;
 }
 $t = 0;
 $n = $this->doc{$i};
 if(isset($p[$n])){
 $t = $this->find($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->keyname){
 return ;
 }
 $cnt = count($this->stack)-1;
 $this->stack[$cnt][$this->keyname] = array();
 $this->stack[] =& $this->stack[$cnt][$this->keyname];
 $this->keyname = '';
 }

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

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

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

} // class end
?>

demo.php

<?php
require 'RestorePrint.class.php';

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

// 显示打印的数据
echo '显示打印的数据<br>';
echo '<pre>'.$print_r_data.'</pre>';

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

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

echo '还原为数组<br>';
var_dump($result);

?>

输出：

显示打印的数据

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

还原为数组

array (size=5) 'name' => string 'fdipzone' (length=8) 'gender' => string 'male' (length=4) 'age' => string '18' (length=2) 'profession' => string 'programmer' (length=10) 'detail' =>  array (size=2) 'grade' => string '1' (length=1) 'addtime' => 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。