How to restore the data processed by print_r to the original array through php-PHP Tutorial-php.cn

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How to restore the data processed by print_r to the original array through php

Jun 20, 2018 pm 05:55 PM

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php The print_r method can print and display variables to make them easy to understand. If the variable is a string, integer or float, the variable value itself will be printed. If the variable is an array, the keys and elements will be displayed in a certain format. object is similar to an array. print_r is used to print large arrays.

php natively does not restore the data printed by the print_r method to the original array, so the following method was written to restore the data processed by print_r to the original array.

RestorePrint.class.php

&lt;?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 = &#39;&#39;;    protected $keyname = &#39;&#39;;    protected $stack = array();    public function __construct() {
        $this-&gt;stack[] =&amp; $this-&gt;res;
    }    public function __call($method, $param){
        echo $this-&gt;buf .&#39; not defined mehtod:&#39;.$method. &#39; param:&#39;.implode(&#39;,&#39;, $param);
    }    public function set($word, $value=&#39;&#39;){
        if(is_array($word)){            foreach($word as $k=&gt;$v){                $this-&gt;set($k, $v);
            }
        }        $p =&amp; $this-&gt;dict;        foreach(str_split($word) as $ch){            if(!isset($p[$ch])){                $p[$ch] = array();
            }            $p =&amp; $p[$ch];
        }        $p[&#39;val&#39;] = $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 = &#39;&#39;;
            }else{                $this-&gt;buf .= $this-&gt;doc{$i++};
            }
        }
    }    protected function find(&amp;$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[&#39;val&#39;])){            $arr = explode(&#39;,&#39;, $p[&#39;val&#39;]);
            call_user_func_array(array($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[] =&amp; $this-&gt;stack[$cnt][$this-&gt;keyname];        $this-&gt;keyname = &#39;&#39;;
    }    protected function brackets($c){
        $cnt = count($this-&gt;stack)-1;        switch($c){            case &#39;)&#39;:                if($this-&gt;keyname){                    $this-&gt;stack[$cnt][$this-&gt;keyname] = trim($this-&gt;buf);
                }                $this-&gt;keyname = &#39;&#39;;
                array_pop($this-&gt;stack);                break;            case &#39;[&#39;:                if($this-&gt;keyname){                    $this-&gt;stack[$cnt][$this-&gt;keyname] = trim($this-&gt;buf);
                }                break;            case &#39;]&#39;:                $this-&gt;keyname = $this-&gt;buf;                break;
        }        $this-&gt;buf = &#39;&#39;;
    }

} // class end?&gt;

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demo.php

&lt;?phprequire &#39;RestorePrint.class.php&#39;;$print_r_data = &lt;&lt;&lt;TXT
Array
(
    [name] =&gt; fdipzone
    [gender] =&gt; male
    [age] =&gt; 18
    [profession] =&gt; programmer
    [detail] =&gt; Array(
        [grade] =&gt; 1
        [addtime] =&gt; 2016-10-31
    )
)
TXT;// 显示打印的数据echo &#39;显示打印的数据&lt;br&gt;&#39;;echo &#39;&lt;pre&gt;&#39;.$print_r_data.&#39;&lt;/pre&gt;&#39;;$oRestorePrint = new RestorePrint;$oRestorePrint-&gt;set(&#39;Array&#39;, &#39;group&#39;);$oRestorePrint-&gt;set(&#39; [&#39;, &#39;brackets,[&#39;);$oRestorePrint-&gt;set(&#39;] =&gt; &#39;, &#39;brackets,]&#39;);$oRestorePrint-&gt;set(&#39;)&#39;, &#39;brackets,)&#39;);$oRestorePrint-&gt;parse($print_r_data);$result = $oRestorePrint-&gt;res;echo &#39;还原为数组&lt;br&gt;&#39;;
var_dump($result);?&gt;

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Output:

显示打印的数据Array(
    [name] =&gt; fdipzone
    [gender] =&gt; male
    [age] =&gt; 18
    [profession] =&gt; programmer
    [detail] =&gt; Array(
        [grade] =&gt; 1
        [addtime] =&gt; 2016-10-31
    )
)
还原为数组array (size=5)  &#39;name&#39; =&gt; string &#39;fdipzone&#39; (length=8)  &#39;gender&#39; =&gt; string &#39;male&#39; (length=4)  &#39;age&#39; =&gt; string &#39;18&#39; (length=2)  &#39;profession&#39; =&gt; string &#39;programmer&#39; (length=10)  &#39;detail&#39; =&gt; 
    array (size=2)      &#39;grade&#39; =&gt; string &#39;1&#39; (length=1)      &#39;addtime&#39; =&gt; string &#39;2016-10-31&#39; (length=10)

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