php 导出数据至csv

我导出的文件格式为.csv，下面是我做的导出产品数据的功能，上代码。

<button type="button" class="button" id="export"><span><span>导出</span></span></button>

<script type="text/javascript"><!--
$(function(){
$(document).keydown(function(event){
if(event.keyCode==13){
filter();
}
});

$("#export").click(function(){
var selected = "";
var checkSelected = $("input:checkbox[name='selected[]']");
for(var i=0; i<checkSelected.length; i++){
if(checkSelected[i].checked){
if(checkSelected[i].value != ''){
selected += ("," + checkSelected[i].value);
}
}
}
selected = selected.slice(1);
var url = 'http://localhost/easyManager/manager/product.php?action=export';
if(selected){
url += '&' + "selected=" + selected;
}
if( confirm("确定要导出该数据吗？")) setLocation(url);
})
});

function setLocation(url)
{
window.location.href = url;
}

</script>

上php代码：

<?php

$action = isset($_GET['action'])?$_GET['action']:'';

switch ($action) {

case 'export';
$error = false;

if( isset($_GET['selected'])&& !empty($_GET['selected'])){
$selected = explode(',',$_GET['selected']);
} else  {
$error = true;
$message_stack->add_session('product', '未选中所需导出的数据。');
}

if($error == true){
redirect(href_link(FILENAME_PRODUCT));
} else {
$fileName = 'product' .time(). '.csv';
header("Content-Type: text/csv");
header('Content-Disposition: attachment; filename="' . $fileName);
header('Cache-Control:must-revalidate,post-check=0,pre-check=0');
header('Expires:0');
header('Pragma:public');

// 打开PHP文件句柄，php://output 表示直接输出到浏览器
$fp = fopen('php://output', 'a');
$header = array("id", "name","description",'google product category','product_type', "link", "image link","condition","availability","price", "sale price", "gtin","brand","color", "size", "material");

foreach ($header as $e => $f) {
// CSV的Excel支持GBK编码，需转换，否则乱码
$header[$e] = iconv('utf-8', 'gbk', $f);
}
fputcsv($fp, $header);

$productList = array();
foreach ($selected as $ke => $v) {
unset($productList);
$sql = "SELECT sku,name,description,filter_12,filter_13, url, image,filter_14,filter_15,price,specials_price,filter_16,filter_17,filter_18,filter_19,filter_20
FROM " . TABLE_PRODUCT . "
WHERE product_id = ".$v;
$productList[0] = $db->Execute($sql);
preg_match_all('/(\d+)\.(\d+)/is',$currencies->display_price($productList[0]->fields['price']),$productPrice);
$productList[0]->fields['filter_14']   = 'new';
$productList[0]->fields['filter_15']   = "in stock";
$productList[0]->fields['url']         = HTTP_SERVER . '/' . FILENAME_INDEX . '?main_page=product&pID=' . $v;
$productList[0]->fields['image']       = HTTP_SERVER . '/' . $productList[0]->fields['image'];
$productList[0]->fields['price']       = $productPrice[0][0]." ".$currencies->get_code();
$productList[0]->fields['specials_price'] = number_format($productList[0]->fields['specials_price'],2)." ".$currencies->get_code();
$sqlQuery         = "SELECT product_id,product_option_id,product_option_value_id, price FROM ".TABLE_PRODUCT_ATTRIBUTE . " WHERE product_id = ". $v;
$productAttrValue = $db->Execute($sqlQuery);
$productAttr      = array();
$optionValueArray = array();
$product_re       = array();
$productTmp       = array();
$optionArray      = array();

while (!$productAttrValue->EOF) {
$productAttr[] = array(
'product_option_id'       => $productAttrValue->fields['product_option_id'],
'product_option_value_id' => $productAttrValue->fields['product_option_value_id'],
'price'                   => $productAttrValue->fields['price']
);
$productAttrValue->MoveNext();
}

foreach($productAttr as $key => $val){
//select product option
$optionValueSql     = "SELECT product_option_id,product_option_value_id,name FROM ".TABLE_PRODUCT_OPTION_VALUE ." WHERE product_option_value_id = ".$val['product_option_value_id'];
$optionValueResult  = $db->Execute($optionValueSql);
$optionValueArray[] = array(
'product_option_id'       => $optionValueResult->fields['product_option_id'],
'product_option_value_id' => $optionValueResult->fields['product_option_value_id'],
'name'                    =>  $optionValueResult->fields['name']
);

$optionSql     = "SELECT product_option_id,name FROM " . TABLE_PRODUCT_OPTION  . " WHERE product_option_id = " . $val['product_option_id'];
$optionResult  = $db->Execute($optionSql);
$optionArray[] = array(
'product_option_id' => $optionResult->fields['product_option_id'],
'name'              => $optionResult->fields['name']
);

$productOption[$key] = array(
'product_value_id' => $val['product_option_value_id'],
'attribute'        => $optionArray[$key]['name'],
'optionValue'      => $optionValueArray[$key]['name'],
'price'            => $val['price']
);

$productTmp[$val['product_option_id']][] = array(
'product_value_id' => $val['product_option_value_id']
);
}
//combination
$rows = array();

$rows = getCombination($productTmp);
//Combinatorial Calculation
$productCom = array();

foreach($rows as $option => $item){
$productCom[] = combinatorialCalculation($item,$productOption);
}

//printf
if($productCom){
$size = $color = $brand = $material = "";
foreach($productCom as $key => $value){
$price = array_pop($value);
foreach($value as $k => $v) {
switch ($v) {
case 'size':
$size = $value[$k + 1];
break;
case 'color':
$color = $value[$k + 1];
break;
case 'material':
$material = $value[$k + 1];
break;
case 'brand':
$brand = $value[$k + 1];
break;
}
}

$product_price = ($price + $productPrice[0][0])." ".$currencies->get_code();
$product_re[] = array(
'id'             => $productList[0]->fields['sku'],
'name'           => $productList[0]->fields['name'],
'description'    => $productList[0]->fields['description'],
'google product category'=> '',
'product_type'   => '',
'link'           => $productList[0]->fields['url'],
'image link'     => $productList[0]->fields['image'],
'condition'      => 'new',
'availability'   => "in stock",
'price'          => $product_price,
'sale price'     => $productList[0]->fields['specials_price'],
'gtin'           => '',
'brand'          => $brand,
'color'          => $color,
'size'           => $size,
'material'       => $material
);
}
}
//要导出的数据
$row = $productList[0]->fields;

foreach ($row as $kv => $va) {
$row[$kv] = iconv('utf-8', 'gbk', $va);
}
fputcsv($fp, $row);

if($product_re) {
for ($ij = 0; $ij < count($product_re); $ij++) {
$product_row = $product_re[$ij];
foreach ($product_row as $it => $item) {
$product_row[$it] = iconv('utf-8', 'gbk', $item);
}
fputcsv($fp, $product_row);
}
}
}

fclose($fp);
$message_stack->add_session('product', '数据导出成功！', 'success');
exit;
}
break;

}

function getCombination($product_arr){
$rows = array();
foreach($product_arr as $option => $items){
if(count($rows) > 0){
$clone = $rows;
$rows = array();
foreach($items as $item){
$tmp = $clone;
foreach($tmp as $index => $val){
$val[$option] = $item['product_value_id'];
$tmp[$index] = $val;
}
$rows = array_merge($rows, $tmp);
}
}else{
//记录第一列
foreach($items as $item){
$rows[][$option] = $item['product_value_id'];
}
}
}
return $rows;
}

function combinatorialCalculation($item, $product){
$combination = array();
$price = 0.0;
$array = array('size','color','material','brand');
foreach($item as $value){
foreach($product as $k => $v){
if($value == $v['product_value_id'] && in_array(strtolower($v['attribute']),$array)){
array_push($combination,strtolower($v['attribute']));
$price += $v['price'];
array_push($combination,$v['optionValue']);
break;
}
}
}
array_push($combination,$price);
return $combination;
}

?>

红色部分为导出关键代码