我在 CodeIgniter 中使用 PhpExcel。当我在 Excel 中生成大量数据时，会产生致命错误：
Out of memory (allocated 883949568) (tried to allocate 93 bytes) in /home/abc/public_html/xxx/application/libraries/excel/PHPExcel/Style.php on line 465.
即使我在控制器中设置了内存限制 ini_set("memory_limit","5120M");
如何修复该错误？
我在控制器中编写了以下代码：
公共函数 export_to_excel($sheets,$num_cols,$tab,$declared_file_name,$download_option) {
$this->load->library('excel/PHPExcel/iofactory');
// Cell caching to reduce memory usage.
$cacheMethod = PHPExcel_CachedObjectStorageFactory:: cache_to_phpTemp;
$cacheSettings = array( ' memoryCacheSize ' => '5120MB');
PHPExcel_Settings::setCacheStorageMethod($cacheMethod, $cacheSettings);
// Create new PHPExcel object
$this->load->library('excel/PHPExcel');
/************ COLUMNS TO CALCULATE SUB TOTAL *******************/
$col_heads = explode(",",rtrim($num_cols,","));
foreach($col_heads as $key => $val)
{
if(($val == 'PRODUCT LIABILITY') || ($val == 'PUBLIC LIABILITY') || ($val == 'GIT'))
{
unset($col_heads[$key]);
}
}
/************ COLUMNS WITH CURRENCY FORMAT *******************/
$numeric_cols = array_merge($col_heads, array("LOSS OF RENT",
"TURNOVER","PRODUCT LIABILITY","PUBLIC LIABILITY","GIT"));
/********************** SHEETS STARTS ********************************/
$active_sheet_index = 0;
foreach ($sheets as $sheet_name=>$rows)
{
if ($active_sheet_index > 0)
{
// Create a new worksheet, after the default sheet
$this->phpexcel->createSheet();
}
$this->phpexcel->setActiveSheetIndex($active_sheet_index);
$i=1; // start from 2nd row
$numeric_format_col = array();
/********************** ROWS STARTS ********************************/
foreach ($rows as $key=>$val)
{
$index = 65;
$a = 65;
$prefix_code = 65;
$prefix = '';
/********************** COLS STARTS ********************************/
foreach ($val as $values)
{
// from A to Z
if ($index <= $a+25)
{
$cell = $prefix.chr($index).$i;
}
else
{
$previou_prefix = '';
$prefix = $previou_prefix.chr($prefix_code);
if ($prefix_code < $a+25)
{
$prefix_code++;
}
else
{
$prefix_code = 65;
}
$index = 65;
$cell = $prefix.chr($index).$i;
}
$col_dimension = $prefix.chr($index); // e.g. A,B,C
$this->phpexcel->getActiveSheet()->getColumnDimension($col_dimension)->setAutoSize(true);
//echo '<br>'.$cell;
/******* STORE COLUMN NUMBER FOR SHOWING SUB TOTAL OF COLUMNS ********/
if ($i == 1)
{
$col_val = str_replace('"','',$values);
if (in_array($col_val,$col_heads) || in_array(str_replace(' ','_',$col_val),$col_heads)
|| (strpos($col_val,'COMMISSION(') !== false && strpos($col_val,'%)') !== false))
{
$col_name = str_replace(' ','_',$col_val);
$tot[$col_name] = $prefix.chr($index);
}
if (in_array($col_val,$numeric_cols) || in_array(str_replace(' ','_',$col_val),$numeric_cols)
|| (strpos($col_val,'COMMISSION(') !== false && strpos($col_val,'%)') !== false))
{
$numeric_format_col[] = $prefix.chr($index);
}
if ($col_val == "FULL ADDRESS")
{
$business_address_col = $prefix.chr($index);
}
}
/***********************************************************/
$values = str_replace("\"","",$values);
if (isset($business_address_col) && $cell != $business_address_col.$i)
{
$values = str_replace("\n"," ",$values);
$values = str_replace("\t"," ",$values);
$values = str_replace("\r\t"," ",$values);
}
if($i == 1)
{
// FOR BROKER ACCOUNTS STATEMENT START
if ($tab == 'BROKER NAME' && (!(strpos($values,'BROKER COMMISSION') === false) || $values == 'BROKER FEE' || $values == 'BROKER NET') && $sheet_name != 'DBI')
{
$values = str_replace('BROKER',$sheet_name,$values);
}
// FOR BROKER ACCOUNTS STATEMENT END
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_CENTER);
//$this->PHPExcel->getActiveSheet()->getRowDimension("$i")->setRowHeight(25);
$this->phpexcel->getActiveSheet()->setCellValue($cell, trim($values));
}
else
{
if (isset($business_address_col) && $cell == $business_address_col.$i)
{
$val_arr = explode("|",$values);
$val_str = implode("\n",$val_arr);
$this->phpexcel->getActiveSheet()->setCellValue($cell, $val_str);
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setWrapText(true);
//$this->phpexcel->getActiveSheet()->getStyle($cell)->getBorders()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
}
else
{
$this->phpexcel->getActiveSheet()->setCellValue($cell, trim($values));
}
if (in_array($col_dimension,$numeric_format_col))
{
$format ='[$£-809]#,##0.00;[Red]-[$£-809]#,##0.00';
//$format = utf8_encode('[$£-809]#,##0.00;[Red]-[$£-809]#,##0.00');
$this->phpexcel->getActiveSheet()->getStyle($cell)->getNumberFormat()->setFormatCode($format);
}
}
/******** SET HEADER COLOR ***********/
if ($i == 1)
{
if($this->color1=="#000" && $this->color2=="#000")
{
if($this->header_alignment=='text-align-left')
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_LEFT);
}
else if($this->header_alignment=='text-align-right')
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_RIGHT);
}
else
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_CENTER);
}
if($this->header_font_style=="bold italic")
{
$header_font_style=explode(" ",$this->header_font_style);
$header_font=array(
$header_font_style[0] => true,
$header_font_style[1] => true,
'color'=> array('argb' => 'FFFFFFFF'),
'size'=>$this->body_font_size,
'name'=>$this->body_font
);
}
else
{
$header_font=array(
$this->header_font_style => true,
'color'=> array('argb' => 'FFFFFFFF'),
'size'=>$this->header_font_size,
'name'=>$this->header_font,
'Alignment'=>$this->header_alignment
);
}
$this->phpexcel->getActiveSheet()->getStyle($cell)->applyFromArray(
array('fill' => array(
'type' => PHPExcel_Style_Fill::FILL_SOLID,
'color' => array('argb' => 'FF000000')
),
'font' => $header_font ,
'borders' => array('outline' => array('style' => PHPExcel_Style_Border::BORDER_THICK,
)
)
)
);
}
else
{
if($this->header_alignment=='text-align-left')
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_LEFT);
}
else if($this->header_alignment=='text-align-right')
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_RIGHT);
}
else
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_CENTER);
}
if($this->header_font_style=="bold italic")
{
$header_font_style=explode(" ",$this->header_font_style);
$header_font=array(
$header_font_style[0] => true,
$header_font_style[1] => true,
'color'=> array('rgb' =>$this->color1),
'size'=>$this->body_font_size,
'name'=>$this->body_font
);
}
else
{
$header_font=array(
$this->header_font_style => true,
'color'=> array('rgb' =>$this->color1),
'size'=>$this->header_font_size,
'name'=>$this->header_font,
'Alignment'=>$this->header_alignment
);
}
$this->phpexcel->getActiveSheet()->getStyle($cell)->applyFromArray(
array('fill' => array(
'type' => PHPExcel_Style_Fill::FILL_SOLID,
'color' => array('rgb' =>$this->color2)
),
'font' => $header_font,
'borders' => array('outline' => array('style' => PHPExcel_Style_Border::BORDER_THICK,
)
)
)
);
}
}
$index++;
}
/********************** COLS ENDS ********************************/
$final_cell = $cell;
$i++;
}
/********************** ROWS ENDS ********************************/
/********************** Body Format********************************/
if($this->color3!="#000" || $this->color4!="#000")
{
if($this->body_alignment=='text-align-left')
{
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_LEFT);
}
else if($this->body_alignment=='text-align-right')
{
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_RIGHT);
}
else
{
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_CENTER);
}
if($this->body_font_style=="bold italic")
{
$body_font_style=explode(" ",$this->footer_font_style);
$body_font=array(
$body_font_style[0] => true,
$body_font_style[1] => true,
'color'=> array('rgb' =>$this->color3),
'size'=>$this->body_font_size,
'name'=>$this->body_font
);
}
else
{
$body_font=array(
$this->body_font_style => true,
'color'=> array('rgb' =>$this->color3),
'size'=>$this->body_font_size,
'name'=>$this->body_font
);
}
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->applyFromArray(
array(
'fill' => array(
'type' => PHPExcel_Style_Fill::FILL_SOLID,
'color' => array('rgb' =>$this->color4)
),
'font' => $body_font,
'borders' => array('outline' => array('style' => PHPExcel_Style_Border::BORDER_THICK,))
)
);
}
else
{
if($this->body_alignment == 'text-align-left')
{
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_LEFT);
}
else if($this->body_alignment == 'text-align-right')
{
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_RIGHT);
}
else
{
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_CENTER);
}
if ($this->body_font_style == "bold italic")
{
$body_font_style = explode(" ",$this->footer_font_style);
$body_font = array(
$body_font_style[0] => true,
$body_font_style[1] => true,
'size'=>$this->body_font_size,
'name'=>$this->body_font
);
}
else
{
$body_font = array(
$this->body_font_style => true,
'size'=>$this->body_font_size,
'name'=>$this->body_font
);
}
$this->phpexcel->getActiveSheet()->getStyle("A2:$final_cell")->applyFromArray(
array(
'font' => $body_font,
'borders' => array('outline' => array('style' => PHPExcel_Style_Border::BORDER_THICK,) )
)
);
}
/***************** SHOW SUB TOTAL ROW ************************/
$count_tot = 0;
if (isset($tot))
{
foreach ($tot as $col_name=>$c)
{
$count_tot++;
$k = $i + 1;
$cell = $c.$k;
if ($count_tot == 1)
{
$first_col_name = $cell;
}
$j = $i - 1;
$this->phpexcel->getActiveSheet()->setCellValue($cell, '=SUM('.$c.'2:'.$c.$j.')');
$format ='[$£-809]#,##0.00;[Red]-[$£-809]#,##0.00';
//$format = utf8_encode('[$£-809]#,##0.00;[Red]-[$£-809]#,##0.00');
$this->phpexcel->getActiveSheet()->getStyle($cell)->getNumberFormat()->setFormatCode($format);
}
}
$last_col_name = $cell;
/***************** SET BG COLOR IN SUB TOTAL CELLS ****************/
if (isset($first_col_name))
{
if($this->color5=="#000" && $this->color6=="#000")
{
if($this->footer_alignment=='text-align-left')
{
$this->phpexcel->getActiveSheet()->getStyle("$first_col_name:$last_col_name")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_LEFT);
}
else if($this->footer_alignment=='text-align-right')
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_RIGHT);
}
else
{
$this->phpexcel->getActiveSheet()->getStyle("$first_col_name:$last_col_name")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_CENTER);
}
if($this->footer_font_style=="bold italic")
{
$footer_font_style=explode(" ",$this->footer_font_style);
$footer_font=array(
$footer_font_style[0] => true,
$footer_font_style[1] => true,
'size'=>$this->footer_font_size,
'name'=>$this->footer_font
);
}
else
{
$footer_font=array(
$this->footer_font_style => true,
'size'=>$this->footer_font_size,
'name'=>$this->footer_font
);
}
$this->phpexcel->getActiveSheet()->getStyle("$first_col_name:$last_col_name")->applyFromArray(
array('fill' => array(
'type' => PHPExcel_Style_Fill::FILL_SOLID,
'color' => array('argb' => 'FFCCFFCC')
),
'font' =>$footer_font,
'borders' => array('outline' => array('style' => PHPExcel_Style_Border::BORDER_THICK,
)
)
)
);
}
else
{
if($this->footer_alignment=='text-align-left')
{
$this->phpexcel->getActiveSheet()->getStyle("$first_col_name:$last_col_name")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_LEFT);
}
else if($this->footer_alignment=='text-align-right')
{
$this->phpexcel->getActiveSheet()->getStyle($cell)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_RIGHT);
}
else
{
$this->phpexcel->getActiveSheet()->getStyle("$first_col_name:$last_col_name")->getAlignment()->setHorizontal(PHPExcel_Style_Alignment :: HORIZONTAL_CENTER);
}
if($this->footer_font_style=="bold italic")
{
$footer_font_style=explode(" ",$this->footer_font_style);
$footer_font=array(
$footer_font_style[0] => true,
$footer_font_style[1] => true,
'color'=> array('rgb' =>$this->color5),
'size'=>$this->footer_font_size,
'name'=>$this->footer_font
);
}
else
{
$footer_font=array(
$this->footer_font_style => true,
'color'=> array('rgb' =>$this->color5),
'size'=>$this->footer_font_size,
'name'=>$this->footer_font
);
}
$this->phpexcel->getActiveSheet()->getStyle("$first_col_name:$last_col_name")->applyFromArray(
array('fill' => array(
'type' => PHPExcel_Style_Fill::FILL_SOLID,
'color' => array('rgb' =>$this->color6)
),
'font' =>$footer_font,
'borders' => array('outline' => array('style' => PHPExcel_Style_Border::BORDER_THICK,
)
)
)
);
}
}
$this->phpexcel->getActiveSheet()->getStyle("A1:$final_cell")->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_TOP);
// Rename sheet
$this->phpexcel->getActiveSheet()->setTitle($sheet_name);
$active_sheet_index++;
}
// $this->phpexcel->getActiveSheet()->setAutoFilter('A1:C9');
/********************** SHEETS ENDS ********************************/
$file_name = $declared_file_name.'.xls';
if ($download_option == 'declare_report' || $download_option == 'save_report')
{
// Redirect output to a client’s web browser (Excel2007)
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="'.$file_name.'"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($this->phpexcel, 'Excel5');
$objWriter->save('php://output');
if ($download_option == 'declare_report')
{
$objWriter->save('uploads/declared_reports/'.$file_name);
}
else{
$objWriter->save('uploads/saved_reports/'.$file_name);
}
//echo __FILE__;
//$objWriter->save(str_replace(__FILE__,'uploads/declared_reports/'.$file_name,__FILE__));
}
else
{
// Redirect output to a client’s web browser (Excel2007)
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="'.$file_name.'"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($this->phpexcel, 'Excel5');
$objWriter->save('php://output');
}
exit;
}