无法在 Codeigniter 中重新声明 class Excel 错误 / PHPExcel

Question

我想在 Excel 文件中导出一些数据，但出现此错误。

A PHP Error was encountered Severity: Compile Error

Message: Cannot redeclare class Excel

Filename: libraries/EXcel.php

Line Number: 9

我尝试了一些方法，但没有人适用于我的情况。喜欢 1 2

这是我的EXcel.php代码

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

require_once APPPATH."third_party/PHPExcel/PHPExcel.php";
// var_dump(get_declared_classes());
class Excel extends PHPExcel {
    public function __construct() {
        parent::__construct();
    }
}
?>

有什么问题，谢谢。

这是我的 Var_dump 结果：

array (size=205)
  0 => string 'stdClass' (length=8)
  1 => string 'Exception' (length=9)
  2 => string 'ErrorException' (length=14)
  3 => string 'Closure' (length=7)
  4 => string 'Generator' (length=9)
  5 => string 'DateTime' (length=8)
  6 => string 'DateTimeImmutable' (length=17)
  7 => string 'DateTimeZone' (length=12)
  8 => string 'DateInterval' (length=12)
  9 => string 'DatePeriod' (length=10)
  10 => string 'LogicException' (length=14)
  11 => string 'BadFunctionCallException' (length=24)
  12 => string 'BadMethodCallException' (length=22)
  13 => string 'DomainException' (length=15)
  14 => string 'InvalidArgumentException' (length=24)
  15 => string 'LengthException' (length=15)
  16 => string 'OutOfRangeException' (length=19)
  17 => string 'RuntimeException' (length=16)
  18 => string 'OutOfBoundsException' (length=20)
  19 => string 'OverflowException' (length=17)
  20 => string 'RangeException' (length=14)
  21 => string 'UnderflowException' (length=18)
  22 => string 'UnexpectedValueException' (length=24)
  23 => string 'RecursiveIteratorIterator' (length=25)
  24 => string 'IteratorIterator' (length=16)
  25 => string 'FilterIterator' (length=14)
  26 => string 'RecursiveFilterIterator' (length=23)
  27 => string 'CallbackFilterIterator' (length=22)
  28 => string 'RecursiveCallbackFilterIterator' (length=31)
  29 => string 'ParentIterator' (length=14)
  30 => string 'LimitIterator' (length=13)
  31 => string 'CachingIterator' (length=15)
  32 => string 'RecursiveCachingIterator' (length=24)
  33 => string 'NoRewindIterator' (length=16)
  34 => string 'AppendIterator' (length=14)
  35 => string 'InfiniteIterator' (length=16)
  36 => string 'RegexIterator' (length=13)
  37 => string 'RecursiveRegexIterator' (length=22)
  38 => string 'EmptyIterator' (length=13)
  39 => string 'RecursiveTreeIterator' (length=21)
  40 => string 'ArrayObject' (length=11)
  41 => string 'ArrayIterator' (length=13)
  42 => string 'RecursiveArrayIterator' (length=22)
  43 => string 'SplFileInfo' (length=11)
  44 => string 'DirectoryIterator' (length=17)
  45 => string 'FilesystemIterator' (length=18)
  46 => string 'RecursiveDirectoryIterator' (length=26)
  47 => string 'GlobIterator' (length=12)
  48 => string 'SplFileObject' (length=13)
  49 => string 'SplTempFileObject' (length=17)
  50 => string 'SplDoublyLinkedList' (length=19)
  51 => string 'SplQueue' (length=8)
  52 => string 'SplStack' (length=8)
  53 => string 'SplHeap' (length=7)
  54 => string 'SplMinHeap' (length=10)
  55 => string 'SplMaxHeap' (length=10)
  56 => string 'SplPriorityQueue' (length=16)
  57 => string 'SplFixedArray' (length=13)
  58 => string 'SplObjectStorage' (length=16)
  59 => string 'MultipleIterator' (length=16)
  60 => string 'ReflectionException' (length=19)
  61 => string 'Reflection' (length=10)
  62 => string 'ReflectionFunctionAbstract' (length=26)
  63 => string 'ReflectionFunction' (length=18)
  64 => string 'ReflectionParameter' (length=19)
  65 => string 'ReflectionMethod' (length=16)
  66 => string 'ReflectionClass' (length=15)
  67 => string 'ReflectionObject' (length=16)
  68 => string 'ReflectionProperty' (length=18)
  69 => string 'ReflectionExtension' (length=19)
  70 => string 'ReflectionZendExtension' (length=23)
  71 => string 'SessionHandler' (length=14)
  72 => string '__PHP_Incomplete_Class' (length=22)
  73 => string 'php_user_filter' (length=15)
  74 => string 'Directory' (length=9)
  75 => string 'ZipArchive' (length=10)
  76 => string 'LibXMLError' (length=11)
  77 => string 'DOMException' (length=12)
  78 => string 'DOMStringList' (length=13)
  79 => string 'DOMNameList' (length=11)
  80 => string 'DOMImplementationList' (length=21)
  81 => string 'DOMImplementationSource' (length=23)
  82 => string 'DOMImplementation' (length=17)
  83 => string 'DOMNode' (length=7)
  84 => string 'DOMNameSpaceNode' (length=16)
  85 => string 'DOMDocumentFragment' (length=19)
  86 => string 'DOMDocument' (length=11)
  87 => string 'DOMNodeList' (length=11)
  88 => string 'DOMNamedNodeMap' (length=15)
  89 => string 'DOMCharacterData' (length=16)
  90 => string 'DOMAttr' (length=7)
  91 => string 'DOMElement' (length=10)
  92 => string 'DOMText' (length=7)
  93 => string 'DOMComment' (length=10)
  94 => string 'DOMTypeinfo' (length=11)
  95 => string 'DOMUserDataHandler' (length=18)
  96 => string 'DOMDomError' (length=11)
  97 => string 'DOMErrorHandler' (length=15)
  98 => string 'DOMLocator' (length=10)
  99 => string 'DOMConfiguration' (length=16)
  100 => string 'DOMCdataSection' (length=15)
  101 => string 'DOMDocumentType' (length=15)
  102 => string 'DOMNotation' (length=11)
  103 => string 'DOMEntity' (length=9)
  104 => string 'DOMEntityReference' (length=18)
  105 => string 'DOMProcessingInstruction' (length=24)
  106 => string 'DOMStringExtend' (length=15)
  107 => string 'DOMXPath' (length=8)
  108 => string 'PDOException' (length=12)
  109 => string 'PDO' (length=3)
  110 => string 'PDOStatement' (length=12)
  111 => string 'PDORow' (length=6)
  112 => string 'SimpleXMLElement' (length=16)
  113 => string 'SimpleXMLIterator' (length=17)
  114 => string 'XMLReader' (length=9)
  115 => string 'XMLWriter' (length=9)
  116 => string 'CURLFile' (length=8)
  117 => string 'COMPersistHelper' (length=16)
  118 => string 'com_exception' (length=13)
  119 => string 'com_safearray_proxy' (length=19)
  120 => string 'variant' (length=7)
  121 => string 'com' (length=3)
  122 => string 'dotnet' (length=6)
  123 => string 'finfo' (length=5)
  124 => string 'GMP' (length=3)
  125 => string 'Collator' (length=8)
  126 => string 'NumberFormatter' (length=15)
  127 => string 'Normalizer' (length=10)
  more elements...

Answer 1

来源：Bryan Hazelbaker

Depending on your OS, and how you have constructed the path to your document root, there may be an issue with capitals versus lower case letters in the path name.

将文件从 EXcel.php 重命名为 excel.php（即使用小写）
确保始终使用 require_once（即 require_once /path/to/excel.php）
最后你可以用 print_r(get_declared_classes()); 测试上面的内容（这可以告诉你第一个包含来自 autoload）

Answer 2

Excel class 已在您的项目中声明。

请将您的文件名和 class 控制器名称更改为不同的名称。我希望这能解决你的问题。

无法在 Codeigniter 中重新声明 class Excel 错误 / PHPExcel

Cannot redeclare class Excel error in Codeigniter / PHPExcel

php

excel

codeigniter

phpexcel