Coding Demo

Tutorial

Text file read / write

Read and write a text file function is the basic for text-based programming. Company profile is a good example to start.
The profile consists of the company information needed by the documents across the board. Documents like invoices, purchase orders, and more.

Program flow chart

Webpage generated from the code.

Profile text file.

In text-base database, every text file is a record or data. In the record, the sequence of the text in the lines are the database structure how the program read the file. In this example. the very first line is the company name. All subsequence program has to follow the structure to read the file.

Functions used in this webpage:

PHP

$_POST[] function
trim() function
if statement
fopen() function
fclose() function
fwrite() function
fgets() function
echo function

HTML

HTML Forms

Coding area:

<?php 
/* Set maximum execution time to 30 seconds */
set_time_limit(30);
// Receive data by POST

$company_name = $_POST["company_name"];
$address_1 = $_POST["address_1"];
$address_2 = $_POST["address_2"];
$postal_code = $_POST["postal_code"];
$regno = $_POST["regno"];
$accmon = $_POST["accmon"];
$gstno = $_POST["gstno"];
$gst_rate = $_POST["gst_rate"];
$currency_code = $_POST["currency_code"];
$currency_symbol = $_POST["currency_symbol"];
$portal = $_POST["portal"];
$contact_person = $_POST["contact_person"];
$contact_email = $_POST["contact_email"];
$hp = $_POST["hp"];

$page_name = trim($_POST["page_name"]);

// write to profile file
$profile_file = "profile_file.txt";
if ($page_name !== "")
{

// Open the file in write mode (truncate the file if it exists, create it if it doesn't)
$fp = fopen($profile_file, "w");

// Close the file
fclose($fp);

$myfilew = fopen($profile_file, "w") or die("Unable to open file!");
fwrite($myfilew, $company_name."\n");
fwrite($myfilew, $address_1."\n");
fwrite($myfilew, $address_2."\n");
fwrite($myfilew, $postal_code."\n");
fwrite($myfilew, $regno."\n");
fwrite($myfilew, $accmon."\n");
fwrite($myfilew, $gstno."\n");
fwrite($myfilew, $gst_rate."\n");
fwrite($myfilew, $currency_code."\n");
fwrite($myfilew, $currency_symbol."\n");
fwrite($myfilew, $portal."\n");
fwrite($myfilew, $contact_person."\n");
fwrite($myfilew, $contact_email."\n");
fwrite($myfilew, $hp."\n");
fclose($myfilew);
}
$company_profile = fopen($profile_file,"r");
	if ($company_profile)
	{
		$company_name = fgets($company_profile);
		$address_1 = fgets($company_profile);
		$address_2 = fgets($company_profile);
		$postal_code = fgets($company_profile);
		$regno = fgets($company_profile);
		$accmon = trim(fgets($company_profile));
		$gstno = fgets($company_profile);
		$gst_rate = fgets($company_profile);
		$currency_code = fgets($company_profile);
		$currency_symbol = fgets($company_profile);
		$portal = fgets($company_profile);
		$contact_person = fgets($company_profile);
		$contact_email = fgets($company_profile);
		$hp = fgets($company_profile);
		fclose($company_profile);
	}

// Display received data for checking
/* echo "contact email = ".$contact_email;*/
/* echo "<br>";
echo $page_name;
echo "<br>";*/
echo "account month = ".$accmon;
echo "<br>";
echo "profile file = ".$profile_file;
echo "<br>";
echo "page name = ".$page_name;
echo "<br>";

<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>

<div id="contentarea">
<p><br><b>Company Profile</b><br></p>
<table border="0" width="100%">
<tbody>	
<tr>
<td align="left">
<form  name="orderForm" action="w3diy_profile.php" method="post" onsubmit="return checkforblank()" enctype="multipart/form-data">

<p>Company : <input name="company_name" value="<?php echo $company_name; ?>" size="30" type="text"></p>
<p>Address 1 : <input name="address_1" value="<?php echo $address_1; ?>" size="30" type="text"></p>
<p>Address 2 : <input name="address_2" value="<?php echo $address_2; ?>" size="30" type="text"></p>
<p>Postal code : <input name="postal_code" value="<?php echo $postal_code; ?>" size="30" type="text"></p>
<p>Reg. No. : <input name="regno" value="<?php echo $regno; ?>" size="30" type="text"><br><br></p>
<p>1st Month of the next fiscal year : <input name="accmon" value="<?php echo $accmon; ?>" size="30" type="month"></p>					
<p>GST No. : <input name="gstno" value="<?php echo $gstno; ?> " size="30" type="text"></p>
<p>GST rate : <input name="gst_rate" value="<?php echo $gst_rate; ?>" size="5" type="text">%</p>
<p>Currency code : <input name="currency_code" value="<?php echo $currency_code; ?>" size="5" type="text"></p>					
<p>Currency symbol : <input name="currency_symbol" value="<?php echo $currency_symbol; ?>" size="5" type="text"></p>					
<p>Portal : <input name="portal" value="<?php echo $portal; ?>" size="40" type="text"></p>					
<p><b>Main contact person</b></p>										
<p>Contact person : <input name="contact_person" value="<?php echo $contact_person; ?>" size="30" type="text"></p>					
<p>Email (To/BCC) : <input name="contact_email" value="<?php echo $contact_email; ?>" size="30" type="text"></p>					
<p>HP : <input name="hp" value="<?php echo $hp; ?>" size="15" type="text"></p>