Simple PHP program to read a file and output the contents.

I’m taking a database class at California State University, Fullerton. This class involves learning PHP and MySQL and I already had my first assignment posted. The assignment is to read a text file containing student names with scrambled IDs, output the contents of the file in chunks of 5 records each. This is simple but it is just a start of the semester.

You can view the finished program here

The main code of the PHP program follows (description of what the code does is marked by “//”) :

<?php
        // open and read the file
        $file = fopen("classlist.txt", "r");
        while (!feof($file)) {
            $line_of_text .= fgets($file);
        }
        // create array "students" and put each row of the text file into individual student record
        $students = explode("n", $line_of_text);
        fclose($file);

	// further split the array, breaking each record into multiple fields (since there is ID, first and last name)
	foreach ($students as $key=>$value){
		$students[$key] = explode(",", $value);
	}

	foreach ($students as $key => $row) {
			$id[$key]  = $row['id'];
			$first[$key] = $row['first'];
			$last[$key] = $row['last'];
	}

		// Sort the data with volume descending, edition ascending
		// Add $data as the last parameter, to sort by the common key
		array_multisort($id, SORT_ASC, $students);

		//define a function that will print a table row with the record fields
		function print_row($value) {
			print("<tr><td>$value[0]</td><td>$value[2]</td><td>$value[1]</td></tr>n");
		}

		// print a table header
		echo("<table border=1><col width="50" /><col width="200" /><col width="150" /><tr><th>CWID</th><th>First Name Middle Name</th><th>Last Name</th></tr>n");
		foreach ($students as $key=>$value){

		// after every five records close the table and start a new one
			if (($key % 5 == 0)&& ($key != 0)) {
				print("</table>n<br />");
				print("<table border=1><col width="50" /><col width="200" /><col width="150" /><tr><th>CWID</th><th>First Name Middle Name</th><th>Last Name</th></tr>n");
			}
			print_row($students[$key]);

		}
		print("</table>");
    ?>

See my other PHP code tutorials here :
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