为什么file_put_contents写的文本文件会写双行？

Question

Good morning, friends. I've struggled and googled and I can't seem to find an answer. If it's been answered on here already and I missed it, please feel free to direct me to what I missed.

I have the following bit of PHP code. It works fine when I run it on my Mac (and the non-Windows machines of some friends), but when I run it on Windows (where it's going to live here at work), it writes each line to the text file twice. PHP here at work is 5.3.6 running on IIS 6.

Any help is greatly appreciated.

<?php

$fltSupervision = trim(htmlentities($_POST["txtSupervision"]));
$fltDrugTestUA = trim(htmlentities($_POST["txtDrugTestUA"]));
$fltAlcoholSensor = trim(htmlentities($_POST["txtAlcoholSensor"]));
$fltTotal = trim(htmlentities($_POST["txtTotal"]));
$fltSurcharge = trim(htmlentities($_POST["txtSurcharge"]));

$strTransaction = $fltSupervision . "\t" . $fltDrugTestUA . "\t" . $fltAlcoholSensor . "\t" . $fltSurcharge . "\t" . $fltTotal . PHP_EOL;
echo $strTransaction;

$file = 'fees.txt';
file_put_contents($file, $strTransaction, FILE_APPEND);

?>

Jeremy

Answer 1

It probably has something to do with a missing favicon.ico.

Try changing .htaccess to this:

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-l 
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^.*$ index.php [NC,L]

And try creating a favicon.ico file by creating an empty .txt file renaming it to favicon.ico.

Many browsers look for a favicon.ico file and if that file doesn't exist and your .htaccess file is setup to direct to your script, the script will be executed twice and the text will be added twice to fees.txt.