PHPExcel引发致命错误:耗尽的内存大小为134217728字节(试图分配71字节)

问题描述

我正在使用PHPExcel(位于此处: https://github.com/PHPOffice/PHPExcel ) .如果我尝试读取约2000行以上的内容，则会显示内存错误，如下所示.

I am using PHPExcel (found here: https://github.com/PHPOffice/PHPExcel). If i try to read more than approximately 2000 rows then it shows memory error as follows.

我的Excel数据范围是A1:X2000

My Excel data range is A1:X2000

下面是我用来阅读Excel的代码.

ini_set('memory_limit', '-1');
/** Include path **/
        set_include_path(get_include_path() . PATH_SEPARATOR . 'Classes/');


    /** PHPExcel_IOFactory */
    include $unsecured_param['home_dir'].'APIs/PHPExcelReader/Classes/PHPExcel/IOFactory.php';
    $inputFileName = $target;  // File to read
    //echo 'Loading file ',pathinfo($inputFileName,PATHINFO_BASENAME),' using IOFactory to identify the format<br />';
    try {
        $objPHPExcel = PHPExcel_IOFactory::load($inputFileName);
    } catch(Exception $e) {
        die('Error loading file "'.pathinfo($inputFileName,PATHINFO_BASENAME).'": '.$e->getMessage());
    }

    $sheetData = $objPHPExcel->getActiveSheet()->rangeToArray('A1:X2000', null, true, true, true)
    //store data into array..
    $i=0;$j=0;$max_rows=0;$max_columns=0;
    foreach($sheetData as $rec)
    {
        foreach($rec as $part)
        {//echo "items[$j][$i]=" ; echo $part;echo "<br>";
            $items[$j][$i]=$part; $i=$i+1;
            if($j==0) {$max_columns=$i;}
        }
        $j=$j+1;$i=0;
    }
    $max_rows=$j;

有人可以让我知道如何解决这个问题吗?

Could any one please let me know how to overcome this issue ?

推荐答案

请考虑使用单元缓存来减少将工作簿保存在内存中所需的内存，如开发人员文档的4.2.1节所述

Consider using cell caching to reduce the memory required to hold the workbook in memory, as described in section 4.2.1 of the developer documentation

并考虑不使用toArray()，然后使用该函数在内存中构建另一个数组....这样做实际上是在使用大量内存来保存重复的数据，这时您可以简单地循环浏览工作表的行和列以完成所需的操作

And consider not using toArray() and then using that to build another array in memory.... doing this is really using a lot of memory to hold duplicated data, when you could simply loop through the rows and columns of the worksheet to do what you need

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