Jump Line in File

MatthewPatten · October 29, 2014

So I'm basically done an assignment, however I'm having the biggest brainfart at the moment. For the life of me I cannot remember how to "jump line" in a file and have to put "end" at the end of my txt files. Also I have to put a break in my code which messes up my formatting:

$coursedata = explode('
', rtrim($coursedata));

$studentdata = explode('
', rtrim($studentdata));

fwrite($fp, $number.'||'.$_POST['course'].'
'.$content);

Here is the main code below for the script:

<html>
<head>
<?php
	$success = 0;
	$number_of_registered = 0;
	$course_array = getdatafile('courses.txt');
	$registered_array = getdatafile('register.txt');
	#______________global variables____________________
	function getdatafile($file) {
	# code...
		$coursedata = file_get_contents($file);
		$coursedata = explode('
', rtrim($coursedata));
		unset($coursedata[count($coursedata) - 1]);
		$course_array = array();
		foreach($coursedata as $row) { 
			$course_array[] = explode('||', $row);
		}
		return $course_array;
	}

	#_____________functions_______________________
	if (isset ($_POST['name']) and isset ($_POST['number']) and isset ($_POST['course'])) {
		#________________test if the post exists
		$name = $_POST['name'];
		$number = $_POST['number'];
		$found = 0;
		$findregistered = 0;

		for ($i = 0; $i < sizeof($registered_array); $i++) {
			if ($registered_array[$i][0] == $_POST['number'] && $registered_array[$i][1] == $_POST['course']) {
				# ___________test if the student is enrolled in this course
				$findregistered = 1;
			}

			if($registered_array[$i][1] == $_POST['course']) {
				#________counter of the number registered in this course
				$number_of_registered++;
			}
		}

		for ($i = 0; $i < sizeof($course_array); $i++) {
			if ($course_array[$i][1] == $_POST['course']) {
				# ______________this test if the number of registered is the max
				$course_name = $course_array[$i][0];
				$findcourse = 1;
				if($number_of_registered < $course_array[$i][2]) {
					$number_max = 0;
				} 
				else {
					$number_max = 1;
				}
			}
		}

	$studentdata = file_get_contents('students.txt');
	$studentdata = explode('
', rtrim($studentdata));
	for ($i = 0; $i < sizeof($studentdata); $i++) {
		list($studentname, $studentnumber) = explode("||", rtrim($studentdata[$i]));
		if (strtoupper($name) == strtoupper($studentname) && strtoupper($number) == strtoupper($studentnumber)) {
			$found = 1;
			if ($findcourse == 1 && $findregistered == 0 && $number_max == 0) {
				# _____________________do all the tests to record the student in the course("register.txt") and do it if all the test are checked
				$success = 1;
				$content = file_get_contents('register.txt');
				$fp = fopen('register.txt', 'w');
				fwrite($fp, $number.'||'.$_POST['course'].'
'.$content);
				fclose($fp);

				echo "<title>".strtoupper($name).",".strtoupper($studentname)."</title>";
			}
		}
	}
}
?>

<style>
	body, p{padding: 0;margin: 0;}
</style>
</head>

<body>
<form action="index.php" method="POST">
	<?php
        if (isset ($_POST['course'])) {
            $course = htmlentities ($_POST['course']); 
    
            # ___________________print the information of rgester  in the screen for 
            if ($success == 1) {
                echo "You have successfully enrolled in $course_name, $course!";
            }
    
            if($found == 0) {
                echo 'The credentials you have entered are incorrect, please try again.';
            }
            else {
                if($findregistered == 1) {
                    echo 'You have already enrolled in this course.';
                }
                else {
                    if($number_max == 1) {
                        echo "Sorry $course_name, $course is full, please select another course.";
                    }
                }
            }
        }
    ?>
<p>Courses</p>
	<p><input name = "name" placeholder = "Student Name" type = "text"></p>
	<p><input name = "number" placeholder = "Student Number" type = "text"></p>
	<p><select name = "course" size = "1">
        <option id = "select">-- Select Course --</option> 
        <?php 
            for ($i = 0; $i <sizeof($course_array); $i++) {
                $number_of_registered1 = 0;
                for ($j = 0; $j < sizeof($registered_array); $j++) {
                    if($registered_array[$j][1] == $course_array[$i][1]) {
                        $number_of_registered1++;
                    }
                }
                $a = '<option value = "'.$course_array[$i][1].'">'.$course_array[$i][0].' registered:'.$number_of_registered1.'</option>';
                echo $a;
            } 
		?>
	</select></p>

	<p><input type = "submit" value = "Send"><input type = "reset" value = "Clear"></p>
</form>
</body>
</html>

Barand · October 29, 2014

Are you talking about "\n"?

If so, instead of file_get_contents(), use file() which returns an array of the lines in the file.

MatthewPatten · October 29, 2014

If I change that, I get this error

Warning: rtrim() expects parameter 1 to be string, array given in /Library/WebServer/Documents/index.php on line 12

Barand · October 29, 2014

Yes, you now have an array of lines instead of one long string

try

function getdatafile($file) {
    # code...
    $coursedata = file($file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
    $course_array = array();
    foreach($coursedata as $row) {
        $course_array[] = explode('||', $row);
    }
    return $course_array;
}

MatthewPatten · October 29, 2014

Thank you good Sir, this has seemed to have resolved my issue.

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