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Asked: 2026-05-18T23:19:41+00:00

I’ve downloaded PHPExcel 1.7.5 Production . I would like to use setReadDataOnly() and enableMemoryOptimization()

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I’ve downloaded PHPExcel 1.7.5 Production.

I would like to use setReadDataOnly() and enableMemoryOptimization() as discussed in their forum here and in stackoverflow questions.

However when I use them, I get a Call to undefined method error.

Is there another version or some plugin or library that I have not installed?
What do I have to do to access these methods?

$objPHPExcel = PHPExcel_IOFactory::load("data/".$file_name);
$objPHPExcel->setReadDataOnly(true); //Call to undefined method
$objPHPExcel->enableMemoryOptimization(); //Call to undefined method
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1 Answer

  1. Editorial Team

    You’ve already identified why setReadDataOnly() isn’t working.

    enableMemoryOptimization() is not a valid method for any class within PHPExcel. If you wish to optimise memory, you enable one of the cell cacheing methods before loading any file or instantiating a new PHPExcel object.

    $inputFileType = 'Excel2007';
$inputFileName = 'testBook.xlsx';

$r = PHPExcel_CachedObjectStorageFactory::initialize(PHPExcel_CachedObjectStorageFactory::cache_to_phpTemp);
if (!$r) {
    die('Unable to set cell cacheing');
}

$objReader = PHPExcel_IOFactory::createReader($inputFileType);
$objReader->setReadDataOnly(true);
$objPHPExcel = $objReader->load($inputFileName);

    EDIT

    The thread on enableMemoryOptimization() that you link to in your question is from a user who wanted this built into PHPExcel in a way that broke most of the class’s functionality, while improving performance for his specific use case (at the expense of most other users); and which would have resulted in two incompatible methods for manipulating data within the library. As such, I rejected it.

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