How can i open xlsx file in php?

XLSXReader (available on GitHub) is based on SimpleXLSX (see answer by Sergey Shuchkin).

Convert dates from xlsx using XLSXReader::toUnixTimeStamp.

sample.xlsx

sample.php

require (__DIR__ . '/../xlsxreader/XLSXReader.php');

// entire workbook
$xlsx = new XLSXReader('sample.xlsx');
$sheetNames = $xlsx->getSheetNames();

// loop through worksheets
foreach ($sheetNames as $sheetName) {
    $sheet = $xlsx->getSheet($sheetName);

    // worksheet header
    echo('
' . htmlentities($sheetName) . '
' . PHP_EOL);
    $xlsx_data = $sheet->getData();
    $header_row_xlsx = array_shift($xlsx_data);

    // header row
    echo('' . PHP_EOL);
    echo("\t" . PHP_EOL);
    for ($i = 0; $i < count($header_row_xlsx); $i++) {
        $xlsx_field_name = '' . $header_row_xlsx[$i];
        echo("\t' . PHP_EOL);
    }
    echo('' . PHP_EOL);

    // loop through data rows
    $row_number = 1;
    foreach ($xlsx_data as $row_xlsx) {

        // data row
        echo('' . PHP_EOL);
        echo("\t' . PHP_EOL);
        for ($i = 0; $i < count($row_xlsx); $i++) {
            $xlsx_field_name = '' . ($i < count($header_row_xlsx) ? $header_row_xlsx[$i] : '');
            if ("$xlsx_field_name" === "DoB") {

                // date value
                $xlsx_field_value = DateTimeImmutable::
                        createFromFormat('U', XLSXReader::toUnixTimeStamp($row_xlsx[$i]))
                        ->format('Y-m-d');
            } else {

                // non-date value
                $xlsx_field_value = $row_xlsx[$i];

            }
            echo("\t' . PHP_EOL);
        }
        echo('' . PHP_EOL);

        $row_number++;
    }
    echo("
row
" . htmlentities("$xlsx_field_name") . '
" . htmlentities("$row_number") . '
" . htmlentities("$xlsx_field_value") . '
" . PHP_EOL);
}

output

Sheet1


    
row
    
Name
    
Number
    
DoB


    
1
    
David
    
7
    
1988-11-12


    
2
    
Walt
    
8
    
1972-01-19

XLSXReader.php

Artistic License

XLSXReader is a heavily modified version of:
    SimpleXLSX php class v0.4 (Artistic License)
    Created by Sergey Schuchkin from http://www.sibvision.ru - professional php developers team 2010-2011
    Downloadable from GitHub.

Key Changes include:
    Separation into two classes - one for the Workbook and one for Worksheets
    Access to sheets by name or sheet id
    Use of ZIP extension
    On-demand access of files inside zip
    On-demand access to sheet data
    No storage of XML objects or XML text
    When parsing rows, include empty rows and null cells so that data array has same number of elements for each row
    Configuration option for removing trailing empty rows
    Better handling of cells with style information but no value
    Change of class names and method names
    Removed rowsEx functionality including extraction of hyperlinks
*/

class XLSXReader {
    protected $sheets = array();
    protected $sharedstrings = array();
    protected $sheetInfo;
    protected $zip;
    public $config = array(
        'removeTrailingRows' => true
    );

    // XML schemas
    const SCHEMA_OFFICEDOCUMENT  =  'http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument';
    const SCHEMA_RELATIONSHIP  =  'http://schemas.openxmlformats.org/package/2006/relationships';
    const SCHEMA_OFFICEDOCUMENT_RELATIONSHIP = 'http://schemas.openxmlformats.org/officeDocument/2006/relationships';
    const SCHEMA_SHAREDSTRINGS =  'http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings';
    const SCHEMA_WORKSHEETRELATION =  'http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet';

    public function __construct($filePath, $config = array()) {
        $this->config = array_merge($this->config, $config);
        $this->zip = new ZipArchive();
        $status = $this->zip->open($filePath);
        if($status === true) {
            $this->parse();
        } else {
            throw new Exception("Failed to open $filePath with zip error code: $status");
        }
    }

    // get a file from the zip
    protected function getEntryData($name) {
        $data = $this->zip->getFromName($name);
        if($data === false) {
            throw new Exception("File $name does not exist in the Excel file");
        } else {
            return $data;
        }
    }

    // extract the shared string and the list of sheets
    protected function parse() {
        $sheets = array();
        $relationshipsXML = simplexml_load_string($this->getEntryData("_rels/.rels"));
        foreach($relationshipsXML->Relationship as $rel) {
            if($rel['Type'] == self::SCHEMA_OFFICEDOCUMENT) {
                $workbookDir = dirname($rel['Target']) . '/';
                $workbookXML = simplexml_load_string($this->getEntryData($rel['Target']));
                foreach($workbookXML->sheets->sheet as $sheet) {                
                    $r = $sheet->attributes('r', true);
                    $sheets[(string)$r->id] = array(
                        'sheetId' => (int)$sheet['sheetId'],
                        'name' => (string)$sheet['name']
                    );

                }
                $workbookRelationsXML = simplexml_load_string($this->getEntryData($workbookDir . '_rels/' . basename($rel['Target']) . '.rels'));
                foreach($workbookRelationsXML->Relationship as $wrel) {
                    switch($wrel['Type']) {
                        case self::SCHEMA_WORKSHEETRELATION:
                            $sheets[(string)$wrel['Id']]['path'] = $workbookDir . (string)$wrel['Target'];
                            break;
                        case self::SCHEMA_SHAREDSTRINGS:
                            $sharedStringsXML = simplexml_load_string($this->getEntryData($workbookDir . (string)$wrel['Target']));
                            foreach($sharedStringsXML->si as $val) {
                                if(isset($val->t)) {
                                    $this->sharedStrings[] = (string)$val->t;
                                } elseif(isset($val->r)) {
                                    $this->sharedStrings[] = XLSXWorksheet::parseRichText($val);
                                }
                            }
                            break;
                    }
                }
            }
        }
        $this->sheetInfo = array();
        foreach($sheets as $rid=>$info) {
            $this->sheetInfo[$info['name']] = array(
                'sheetId' => $info['sheetId'],
                'rid' => $rid,
                'path' => $info['path']
            );
        }
    }

    // returns an array of sheet names, indexed by sheetId
    public function getSheetNames() {
        $res = array();
        foreach($this->sheetInfo as $sheetName=>$info) {
            $res[$info['sheetId']] = $sheetName;
        }
        return $res;
    }

    public function getSheetCount() {
        return count($this->sheetInfo);
    }

    // instantiates a sheet object (if needed) and returns an array of its data
    public function getSheetData($sheetNameOrId) {
        $sheet = $this->getSheet($sheetNameOrId);
        return $sheet->getData();
    }

    // instantiates a sheet object (if needed) and returns the sheet object
    public function getSheet($sheet) {
        if(is_numeric($sheet)) {
            $sheet = $this->getSheetNameById($sheet);
        } elseif(!is_string($sheet)) {
            throw new Exception("Sheet must be a string or a sheet Id");
        }
        if(!array_key_exists($sheet, $this->sheets)) {
            $this->sheets[$sheet] = new XLSXWorksheet($this->getSheetXML($sheet), $sheet, $this);

        }
        return $this->sheets[$sheet];
    }

    public function getSheetNameById($sheetId) {
        foreach($this->sheetInfo as $sheetName=>$sheetInfo) {
            if($sheetInfo['sheetId'] === $sheetId) {
                return $sheetName;
            }
        }
        throw new Exception("Sheet ID $sheetId does not exist in the Excel file");
    }

    protected function getSheetXML($name) {
        return simplexml_load_string($this->getEntryData($this->sheetInfo[$name]['path']));
    }

    // converts an Excel date field (a number) to a unix timestamp (granularity: seconds)
    public static function toUnixTimeStamp($excelDateTime) {
        if(!is_numeric($excelDateTime)) {
            return $excelDateTime;
        }
        $d = floor($excelDateTime); // seconds since 1900
        $t = $excelDateTime - $d;
        return ($d > 0) ? ( $d - 25569 ) * 86400 + $t * 86400 : $t * 86400;
    }

}

class XLSXWorksheet {

    protected $workbook;
    public $sheetName;
    protected $data;
    public $colCount;
    public $rowCount;
    protected $config;

    public function __construct($xml, $sheetName, XLSXReader $workbook) {
        $this->config = $workbook->config;
        $this->sheetName = $sheetName;
        $this->workbook = $workbook;
        $this->parse($xml);
    }

    // returns an array of the data from the sheet
    public function getData() {
        return $this->data;
    }

    protected function parse($xml) {
        $this->parseDimensions($xml->dimension);
        $this->parseData($xml->sheetData);
    }

    protected function parseDimensions($dimensions) {
        $range = (string) $dimensions['ref'];
        $cells = explode(':', $range);
        $maxValues = $this->getColumnIndex($cells[1]);
        $this->colCount = $maxValues[0] + 1;
        $this->rowCount = $maxValues[1] + 1;
    }

    protected function parseData($sheetData) {
        $rows = array();
        $curR = 0;
        $lastDataRow = -1;
        foreach ($sheetData->row as $row) {
            $rowNum = (int)$row['r'];
            if($rowNum != ($curR + 1)) {
                $missingRows = $rowNum - ($curR + 1);
                for($i=0; $i < $missingRows; $i++) {
                    $rows[$curR] = array_pad(array(),$this->colCount,null);
                    $curR++;
                }
            }
            $curC = 0;
            $rowData = array();
            foreach ($row->c as $c) {
                list($cellIndex,) = $this->getColumnIndex((string) $c['r']);
                if($cellIndex !== $curC) {
                    $missingCols = $cellIndex - $curC;
                    for($i=0;$i<$missingCols;$i++) {
                        $rowData[$curC] = null;
                        $curC++;
                    }
                }
                $val = $this->parseCellValue($c);
                if(!is_null($val)) {
                    $lastDataRow = $curR;
                }
                $rowData[$curC] = $val;
                $curC++;
            }
            $rows[$curR] = array_pad($rowData, $this->colCount, null);
            $curR++;
        }
        if($this->config['removeTrailingRows']) {
            $this->data = array_slice($rows, 0, $lastDataRow + 1);
            $this->rowCount = count($this->data);
        } else {
            $this->data = $rows;
        }
    }

    protected function getColumnIndex($cell = 'A1') {
        if (preg_match("/([A-Z]+)(\d+)/", $cell, $matches)) {

            $col = $matches[1];
            $row = $matches[2];
            $colLen = strlen($col);
            $index = 0;

            for ($i = $colLen-1; $i >= 0; $i--) {
                $index += (ord($col{$i}) - 64) * pow(26, $colLen-$i-1);
            }
            return array($index-1, $row-1);
        }
        throw new Exception("Invalid cell index");
    }

    protected function parseCellValue($cell) {
        // $cell['t'] is the cell type
        switch ((string)$cell["t"]) {
            case "s": // Value is a shared string
                if ((string)$cell->v != '') {
                    $value = $this->workbook->sharedStrings[intval($cell->v)];
                } else {
                    $value = '';
                }
                break;
            case "b": // Value is boolean
                $value = (string)$cell->v;
                if ($value == '0') {
                    $value = false;
                } else if ($value == '1') {
                    $value = true;
                } else {
                    $value = (bool)$cell->v;
                }
                break;
            case "inlineStr": // Value is rich text inline
                $value = self::parseRichText($cell->is);
                break;
            case "e": // Value is an error message
                if ((string)$cell->v != '') {
                    $value = (string)$cell->v;
                } else {
                    $value = '';
                }
                break;
            default:
                if(!isset($cell->v)) {
                    return null;
                }
                $value = (string)$cell->v;

                // Check for numeric values
                if (is_numeric($value)) {
                    if ($value == (int)$value) $value = (int)$value;
                    elseif ($value == (float)$value) $value = (float)$value;
                    elseif ($value == (double)$value) $value = (double)$value;
                }
        }
        return $value;
    }

    // returns the text content from a rich text or inline string field
    public static function parseRichText($is = null) {
        $value = array();
        if (isset($is->t)) {
            $value[] = (string)$is->t;
        } else {
            foreach ($is->r as $run) {
                $value[] = (string)$run->t;
            }
        }
        return implode(' ', $value);
    }
}

While I recommend getting the latest code from GitHub, the entire 1-file library is less than 400 lines of code, so I included the current version (11/10/2018) above.

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