我刚刚开始使用PHP,我需要将我的sqlite数据库中的表导出为CSV或理想的XLS。我找到了一个使用mysql的例子,但是我无法将其转换为使用sqlite。
这是我到目前为止所拥有的:
<?php
$db = new PDO('sqlite:../ccm.sqlite');
$query = $db->query('SELECT * FROM Emails');
$export = sqlite_query ($query);
$fields = sqlite_num_fields ( $export );
for ( $i = 0; $i < $fields; $i++ ){
$header .= sqlite_field_name( $export , $i ) . "\t";
}
while( $row = sqlite_fetch_row( $export ) ){
//sqlite_fetch_row doesnt actually exist...
$line = '';
foreach( $row as $value ){
if ( ( !isset( $value ) ) || ( $value == "" ) ){
$value = "\t";
}else{
$value = str_replace( '"' , '""' , $value );
$value = '"' . $value . '"' . "\t";
}
$line .= $value;
}
$data .= trim( $line ) . "\n";
}
$data = str_replace( "\r" , "" , $data );
if ( $data == "" ){
$data = "\n(0) Records Found!\n";
}
header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=emails.xls");
header("Pragma: no-cache");
header("Expires: 0");
print "$header\n$data";
?>
任何人都可以帮我解决这个问题吗? 或者如果有一种更简单的方法会很棒。 干杯
答案 0 :(得分:2)
您正在将PDO方法与sqlite_ *函数混合使用;尝试使用其中一个:
$db = new PDO("sqlite:../ccm.sqlite");
$query = $db->query("select * from emails");
$first_row = true;
while ($row = $query->fetch(PDO::FETCH_ASSOC))
{
if ($first_row)
{
// I'm not sure how to get the field names using a PDO method but
// we can use the first row's (or any row's) key values as these
// are the field names.
$first_row = false;
$number_of_fields = count($row);
$field_names = array_keys($row);
$first_field_name = $field_names[0];
}
// do stuff here with the row
print_r($row);
}
或
$db = sqlite_open("../cmm.sqlite");
$query = sqlite_query($db, "select * from emails");
$number_of_fields = sqlite_num_fields($query);
$first_field_name = sqlite_field_name($query, 0);
while ($row = sqlite_fetch_array($query))
{
// do stuff here with the row.
print_r($row);
}
我不是100%肯定,但我认为PDO适用于sqlite3数据库,而sqlite_ *函数适用于sqlite2数据库。
答案 1 :(得分:2)
我对斯泰西的回答有所改进,并认为我会在这里分享。 我添加了标题以使浏览器将输出下载为CSV文件。
<?
// Set headers to make the browser download the results as a csv file
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=filename.csv");
header("Pragma: no-cache");
header("Expires: 0");
// Connect to DB
$conn = new PDO('sqlite:db_name.db');
// Query
$query = $conn->query("SELECT * FROM some_table");
// Fetch the first row
$row = $query->fetch(PDO::FETCH_ASSOC);
// If no results are found, echo a message and stop
if ($row == false){
echo "No results";
exit;
}
// Print the titles using the first line
print_titles($row);
// Iterate over the results and print each one in a line
while ($row != false) {
// Print the line
echo implode(array_values($row), ",") . "\n";
// Fetch the next line
$row = $query->fetch(PDO::FETCH_ASSOC);
}
// Prints the column names
function print_titles($row){
echo implode(array_keys($row), ",") . "\n";
}
答案 2 :(得分:1)
如果我需要快速从sqlite3数据库中获取数据作为CSV文件,我使用sqlite3 CLI:
$ sqlite3 ccm.sqlite
sqlite> .mode csv
sqlite> .output emails.csv
sqlite> .headers on
sqlite> select * from emails
sqlite> .output stdout
sqlite> .quit
$ cat emails.csv
这将启动sqlite3 CLI打开ccm.sqlite数据库,将输出模式设置为csv(select语句的格式),将输出设置为名为emails.csv的文件,打开选择列标题(可选),全选电子邮件表中的数据,将输出设置为标准输出(关闭emails.csv文件),退出CLI并通过将输出发送到标准输出来检查输出。
您可以输出其他格式,在sqlite3 CLI提示符下键入.help:
.mode MODE ?TABLE? Set output mode where MODE is one of:
csv Comma-separated values
column Left-aligned columns. (See .width)
html HTML <table> code
insert SQL insert statements for TABLE
line One value per line
list Values delimited by .separator string
tabs Tab-separated values
tcl TCL list elements
答案 3 :(得分:1)
如果您需要将CSV文件直接发送到浏览器,而无需写入外部文件,则可以打开输出并在其上使用fputcsv。
<?php
$out = fopen('php://output', 'w');
// print column header
fputcsv($out, array_keys($row)));
//or print content directly
fputcsv($out, array_values($row)));
fclose($out);
?>