1. PHP, without COM, generate excel file
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=test.xls");
echo "test1t";
echo "test1t";
echo "test2tn";
echo "test1t";
echo "test2tn";
echo "test1t";
echo " test2tn";
echo "test1t";
echo "test2tn";
echo "test1t";
echo "test2tn";
?>
Run the above code in the php environment, and you can see the browser asking the user whether to download the excel document, click Save, and there will be an extra excel file on the hard disk. Open it with excel and you will see the final result. How good is it? .
In fact, when making real applications, you can take the data out of the database, and then echo it out by adding t at the end of each column of data and n at the end of each row of data. Use header( at the beginning of php "Content-type:application/vnd.ms-excel"); indicates that the output is an excel file. Use header("Content-Disposition:filename=test.xls"); to indicate that the output file name is text.xls. That's OK.
We can also modify the header to allow it to output files in more formats, so that PHP will be more convenient in processing various types of files.
2. Use PHP to convert the mysql data table into excel file format
$DB_Server = "localhost";
$DB_Username = "mydowns";
$DB_Password = "";
$DB_DBName = "mydowns";
$DB_TBLName = "user";
$Connect = @mysql_connect($DB_Server, $DB_Username, $DB_Password)
or die("Couldn@#t connect.");
$Db = @mysql_select_db( $DB_DBName, $Connect)
or die("Couldn@#t select database.");
$file_type = "vnd.ms-excel";
$file_ending = "xls";
header("Content-Type: application/$file_type");
header("Content-Disposition: attachment; filename=mydowns.$file_ending");
header("Pragma: no-cache");
header("Expires: 0");
$now_date = date(@#Y-m-d H:i@#);
$title = "Database name: $DB_DBName, data table: $DB_TBLName, backup date :$now_date";
$sql = "Select * from $DB_TBLName";
$ALT_Db = @mysql_select_db($DB_DBName, $Connect)
or die("Couldn@#t select database");
$result = @mysql_query($sql,$Connect)
or die(mysql_error());
echo("$titlen");
$sep = "t";
for ($i = 0; $i echo mysql_field_name($result,$i) . "t";
}
print("n" );
$i = 0;
while($row = mysql_fetch_row($result))
{
$schema_insert = "";
for($j=0; $j{
if(!isset($row[$j]))
$schema_insert .= "NULL".$sep;
elseif ($row [$j] != "")
$schema_insert .= "$row[$j]".$sep;
else
$schema_insert .= "".$sep;
}
$schema_insert = str_replace($sep."$", "", $schema_insert);
$schema_insert .= "t";
print(trim($schema_insert));
print "n ";
$i++;
}
return (true);
?>
3. An example of PHP operating excel (using COM objects Generate excel)
This is for those who just like to simply process excel
//Define an excel file
$workbook = "C:/My Documents/test.xls";
$sheet = "Sheet1";
/ /Generate a COM object $ex
$ex = new COM("Excel.sheet") or Die ("Cannot connect! ! ! ");
//Open an excel file
$book = $ex->application->Workbooks->Open($workbook) or Die ("Cannot open!!!");
$sheets = $book->Worksheets($sheet);
$sheets->activate;
//Get a cell
$cell = $sheets->Cells(5, 5);
$cell->activate;
//Assign value to the cell
$cell->value = 999;
//Save as another file newtest.xls
$ex->Application->ActiveWorkbook->SaveAs("newtest.xls");
//Close excel. If you want to see the effect, comment out the following two lines and let the user manually close excel.
$ex->Application->ActiveWorkbook->Close("False");
unset ($ex);
?>
4. PHP generates EXCEL stuff
Excel files can be generated through PHP.
----------------------------
Excel Functions
---------- ------------------
Save the following code as excel.php, then include it in the page
and then call
1. Call xlsBOF()
2. Write some content to xlswritenunber() or xlswritelabel().
3. Then call Call xlsEOF()
You can also use the fwrite function to write directly to the server instead of using echo just displayed on the browser.
// ----- begin of function library -----
// Excel begin of file header
function xlsBOF() {
echo pack("ssssss", 0x809, 0x8, 0x0, 0x10, 0x0, 0x0);
return ;
}
// Excel end of file footer
function xlsEOF() {
echo pack("ss", 0x0A, 0x00);
return;
}
// Function to write a Number (double) into Row, Col
function xlsWriteNumber($Row, $Col, $Value) {
echo pack("sssss", 0x203, 14, $Row, $Col, 0x0);
echo pack("d", $Value);
return;
}
// Function to write a label (text) into Row, Col
function xlsWriteLabel($ Row, $Col, $Value ) {
$L = strlen($Value);
echo pack("ssssss", 0x204, 8 + $L, $Row, $Col, 0x0, $L);
echo $Value;
return;
}
// ----- end of function library -----
?>
//
/ / To display the contents directly in a MIME compatible browser
// add the following lines on TOP of your PHP file:
header ("Expires: Mon, 26 Jul 1997 05:00 :00 GMT");
header ("Last-Modified: " . gmdate("D,d M YH:i:s") . " GMT");
header ("Cache-Control: no- cache, must-revalidate");
header ("Pragma: no-cache");
header (@#Content-type: application/x-msexcel@#);
header ("Content- Disposition: attachment; filename=EmplList.xls" );
header ("Content-Description: PHP/INTERBASE Generated Data" );
//
// the next lines demonstrate the generation of the Excel stream
//
xlsBOF(); // begin Excel stream
xlsWriteLabel(0,0,"This is a label"); // write a label in A1, use for dates too
xlsWriteNumber (0,1,9999); // write a number B1
xlsEOF(); // close the stream
?>

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。


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