some experiments, no content so far
================
================
Array
(
    [312] => Array
        (
            [0] => 

            [1] => 
#

        )

    [374] => Array
        (
            [0] =>  Array
        (
            [0] => /*
http://stackoverflow.com/questions/3115559/exploitable-php-functions/3697776#3697776
php_strip_whitespace — Return source with stripped comments and whitespace
needs PECL: var_dump(parsekit_compile_file('index.php', $errors, PARSEKIT_SIMPLE));

array get_defined_functions ( void )
Liefert ein multidimensionales Array mit der Liste aller definierten internen und benutzerdefinierten Funktionen. Die internen Funktionen finden sich im Unterarray $arr["internal"], die benutzerdefinierten in $arr["user"] (siehe auch das folgende Beispiel). below).
*/
            [1] => //echo "#$num#\n";

            [2] => /*
 dummy23
*/
            [3] => //$arr = get_defined_functions();

            [4] => //print_r($arr['user']);die;

            [5] => //308

            [6] => //310:vars

            [7] => //[422] => Array

            [8] => //(

            [9] => //[0] => 316

            [10] => //[1] => "\n"

            [11] => //[2] => 60

            [12] => //)

            [13] => //print_r($aTokens);

            [14] => //$aTokens_[$key] = array_unique($token);

            [15] => //0.88735800 1424102953

            [16] => //0.90127200 1424102953

            [17] => //0.013914

            [18] => //0.41797700 1424103018

            [19] => //0.43034500 1424103018

            [20] => //0.012368

            [21] => //sleep(2);

            [22] => //print_r($aTest);

            [23] => // move the internal pointer to the end of the array

        )

    [377] => Array
        (
            [0] => 



            [1] => 
  
            [2] =>  
            [3] => 
  
            [4] =>  
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            [7] => 

            [8] => 


            [9] =>    
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            [18] =>  
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            [23] => 
    
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            [27] =>     
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            [29] =>  
            [30] => 
  
            [31] => 

            [32] => 

            [33] =>  
            [34] => 

            [35] => 

            [36] => 


            [37] => 

            [38] =>  
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            [41] =>  
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            [46] => 

            [47] => 



            [48] => 



            [49] =>     
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            [61] => 
  
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            [63] =>  
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            [65] =>  
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            [67] => 


            [68] => 



            [69] =>    
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            [75] => 

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            [78] => 

            [79] =>  
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            [83] =>  
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            [97] => 
  
            [98] =>   
            [99] =>  
            [100] => 
  
            [101] =>   
            [102] =>  
            [103] => 
  
            [104] =>   
            [105] =>  
            [106] =>  
            [107] =>  
            [108] =>  
            [109] => 
  
            [110] =>  
            [111] =>  
            [112] => 

            [113] => 

            [114] =>  
            [115] =>  
            [116] => 


            [117] => 

            [118] => 

            [119] =>   
            [120] =>  
            [121] => 


            [122] =>  
            [123] =>  
            [124] =>  
            [125] =>  
            [126] => 

            [127] => 

            [128] =>  
            [129] => 

            [130] =>  
            [131] => 

            [132] =>  
            [133] => 

            [134] =>  
            [135] =>  
            [136] =>  
            [137] => 

            [138] => 

            [139] =>  
            [140] => 

            [141] => 

            [142] =>   
            [143] =>  
            [144] =>  
            [145] => 

            [146] =>   
            [147] =>  
            [148] => 

            [149] =>   
            [150] =>  
            [151] => 

            [152] =>  
            [153] =>  
            [154] =>  
            [155] =>  
            [156] => 
  
            [157] =>  
            [158] =>  
            [159] => 
    
            [160] =>   
            [161] =>  
            [162] => 
  
            [163] => 

            [164] => 

            [165] =>  
            [166] =>  
            [167] =>  
            [168] => 

            [169] =>  
            [170] =>  
            [171] =>  
            [172] => 


        )

    [302] => Array
        (
            [0] => if
            [1] => if
            [2] => if
        )

    [306] => Array
        (
            [0] => 1
            [1] => 1
            [2] => 0
            [3] => 1
            [4] => 787878
            [5] => 1
            [6] => 0
            [7] => 1
            [8] => 2
            [9] => 2
            [10] => 1
            [11] => 1
            [12] => 0
            [13] => 500000
            [14] => 7567
            [15] => 0
        )

    [308] => Array
        (
            [0] => ini_set
            [1] => ini_set
            [2] => ini_set
            [3] => E_ALL
            [4] => file_get_contents
            [5] => token_get_all
            [6] => is_array
            [7] => dummyFunc
            [8] => dummyFunc
            [9] => print_r
            [10] => file_get_contents
            [11] => preg_split
            [12] => array_unique
            [13] => preg_grep
            [14] => sort
            [15] => SORT_NATURAL
            [16] => SORT_FLAG_CASE
            [17] => microtime
            [18] => strtolower
            [19] => strtolower
            [20] => strtolower
            [21] => microtime
            [22] => count
            [23] => print_r
            [24] => microtime
            [25] => range
            [26] => end
            [27] => key
        )

    [316] => Array
        (
            [0] => 'display_errors'
            [1] => '1'
            [2] => 'display_startup_errors'
            [3] => 'error_reporting'
            [4] => 'index.php'
            [5] => 'dummyArg'
            [6] => "dum"
            [7] => "my1"
            [8] => 'dummyFunc'
            [9] => '99'
            [10] => "some experiments, no content so far\n================\n"
            [11] => "================\n"
            [12] => 'x.html'
            [13] => "/\W+/"
            [14] => "/^[a-z_]\w+/"
            [15] => ''
            [16] => "\n"
            [17] => "\n"
            [18] => "\n"
        )

    [310] => Array
        (
            [0] => $file
            [1] => $aTokens
            [2] => $file
            [3] => $aTokens_
            [4] => $aTokens
            [5] => $key
            [6] => $token
            [7] => $token
            [8] => $num
            [9] => $token
            [10] => $aTokens_
            [11] => $num
            [12] => $token
            [13] => $dummyVal
            [14] => $dummy1
            [15] => $dummyA
            [16] => $ztrz
            [17] => $dummyFunc
            [18] => $aTokens_
            [19] => $key
            [20] => $token
            [21] => $aTokens_
            [22] => $file
            [23] => $aWords
            [24] => $file
            [25] => $aWords
            [26] => $aWords
            [27] => $aWords
            [28] => $aWords
            [29] => $aWords
            [30] => $init
            [31] => $aWords_
            [32] => $aWords
            [33] => $key
            [34] => $word
            [35] => $char0
            [36] => $word
            [37] => $char1
            [38] => $word
            [39] => $char2
            [40] => $word
            [41] => $word
            [42] => $aWords_
            [43] => $char0
            [44] => $char1
            [45] => $char2
            [46] => $word
            [47] => $char0
            [48] => $char1
            [49] => $char2
            [50] => $end
            [51] => $secs
            [52] => $end
            [53] => $init
            [54] => $aWords
            [55] => $init
            [56] => $end
            [57] => $secs
            [58] => $aWords_
            [59] => $aWords_
            [60] => $aNums
            [61] => $aTest
            [62] => $start
            [63] => $aNums
            [64] => $key
            [65] => $num
            [66] => $num
            [67] => $start
            [68] => $aTest
            [69] => $num
            [70] => $aTest
            [71] => $aTest
            [72] => $aTest
            [73] => $aTest
        )

    [364] => Array
        (
            [0] => array
            [1] => array
            [2] => array
        )

    [323] => Array
        (
            [0] => foreach
            [1] => foreach
            [2] => foreach
            [3] => foreach
        )

    [327] => Array
        (
            [0] => as
            [1] => as
            [2] => as
            [3] => as
        )

    [362] => Array
        (
            [0] => =>
            [1] => =>
            [2] => =>
            [3] => =>
        )

    [335] => Array
        (
            [0] => function
        )

    [317] => Array
        (
            [0] => echo
            [1] => echo
            [2] => echo
            [3] => echo
            [4] => echo
            [5] => echo
            [6] => echo
            [7] => echo
            [8] => echo
        )

    [301] => Array
        (
            [0] => die
            [1] => die
        )

    [353] => Array
        (
            [0] => isset
        )

    [352] => Array
        (
            [0] => unset
            [1] => unset
        )

    [315] => Array
        (
            [0] => \n
            [1] => \n
            [2] => \n
        )

    [376] => Array
        (
            [0] => ?>

        )

)