Add Modify Delete a single or more lines in PHP

D3158 · February 25, 2010

How would I go about doing it? I have code for them(below) but I am not sure what I am doing wrong. Your help is appreciated!

lab6part2menu.php

<html>

<body>

<h1>Content of your reminder file:</h1>

<?php

include "classes.php";

$orgFile = new ModifyFile;

$orgFile->loadContent('cronpart2.txt');

$size=$orgFile->countLine();

$orgFile->displayContent();

?>

</textarea><br>

Select your options:<br><br>

<input type="radio" name="doWhat" value="delete" />Delete a line<br>

<input type="radio" name="doWhat" value="modify" />Modify a line<br><br>

Line No. to Delete/Modify: <select name='chooseLine'>

<?php

for ($i=0; $i<$size; $i++) {

echo "<option value='$i'>$i</option>";

}

?></select>

Content to Add/Modify:

<?php

echo "Hour";

echo "<select name='hour'>";

for ($hour=1; $hour<=24; $hour++) {

echo "<option value='$hour'>$hour</option>";

}

echo "</select>";

echo "Minute";

echo "<select name='minute'>";

for ($min=0; $min<=59; $min++) {

if ($min<10){

echo "<option value='0$min'>$min</option>";

}

else {

echo "<option value='$min'>$min</option>";

}

echo "</select>";

echo "Day";

echo "<select name='day'>";

for ($day=1; $day<=31; $day++) {

echo "<option value='$day'>$day</option>";

}

echo "</select>";

echo "Month";

echo "<select name='month'>";

for ($month=1; $month<=12; $month++) {

echo "<option value='$month'>$month</option>";

}

echo "</select>";

echo "Year";

echo "<input type='text' size='4' maxlength='4' name='year' />";

echo "Email";

echo "<input type='text' name='email' />";

echo "Message";

echo "<input type='text' name='message' />";

?>

<br>

</form>

lab6part2decision.php

<?php

if (!isset($_POST["doWhat"])){

die("No selection made.<a href='lab6part2menu.php'>Back</a>");

}

$choice=$_POST["doWhat"];

include "classes.php";

$oldFile = new ModFile;

$oldFile->loadContent("email.txt");

$oldFile->countLine();

switch ($choice) {

case "add":

if (!preg_match('/\b\d\d\d\d\b/', trim($_POST['year']))) {

die("Year is not valid. <br><a href='lab6part2menu.php'>Back</a>");

}

if(!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", trim($_POST['email']))) {

die("Email is not valid. <br><a href='lab6part2menu.php'>Back</a>");

}

$new=$_POST['hour'].",".$_POST['minute'].",".

$_POST['day'].",".$_POST['day'].",".$_POST['month'].",".

trim($_POST['year']).",".trim($_POST['email']).",".trim($_POST['message']);

$oldFile->addLine($new);

$oldFile->countLine();

$oldFile->writeToFile('email.txt');

break;

case "delete":

$lineToDelete=$_POST["chooseLine"];

$oldFile->deleteLine($lineToDelete);

$oldFile->countLine();

$oldFile->writeToFile('email.txt');

break;

case "modify":

$lineToModify=$_POST["chooseLine"];

if (!preg_match('/\b\d\d\d\d\b/', trim($_POST['year']))) {

die("Year is not valid. <br><a href='lab6part2menu.php'>Back</a>");

}

if(!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", trim($_POST['email']))) {

die("Email is not valid. <br><a href='lab6part2menu.php'>Back</a>");

}

$change=$_POST['hour'].",".$_POST['minute'].",".

$_POST['day'].",".$_POST['day'].",".$_POST['month'].",".

trim($_POST['year']).",".trim($_POST['email']).",".trim($_POST['message']);

$oldFile->modifyLine($lineToModify,$change);

$oldFile->countLine();

$oldFile->writeToFile('email.txt');

break;

}

?>

<html>

<head>

</head>

<body>

<h1>Content of your REVISED reminder file:</h1>

<?php

$oldFile->countLine();

$oldFile->displayContent();

?>

</textarea></form>

<a href="lab6part2menu.php">Back for More Change</a>

</body>

</html>

classes.php

<?php

class ModifyFile {

public $arrayContent;

public $endofline;

public $size;

function ModifyFile () {

if (strtoupper(substr(PHP_OS,0,3)=='WIN')) {

$this->endofline="\r\n";

}

elseif (strtoupper(substr(PHP_OS,0,3)=='MAC')) {

$endofline="\r";

}

else {

$endofline="\n";

}

//return $endofline;

//$endofline="\r\n";

}

//open a file to write, from beginning of line

function writeToFile($filepath) {

$fh=fopen($filepath,'w');

if (!$fh) {

die ("error opening file.");

}

//lock file

foreach($arrayContent as $temp) {

fwrite($fh,$temp);

}

//unlock file

fclose($fh);

}

//add a line to content array

function addLine($newLine) {

$newLine="\r\n".$newLine."\r\n";

return array_push($arrayContent,$newLine);

$temp=$size;

$temp=$temp-1;

$arrayContent[$temp]=$arrayContent[$temp].$endofline;

array_push($arrayContent,$newLine);

return $arrayContent;

}

//delete a line from content array

function deleteLine($delLine) {

//step through each line of the original file

for ($i=0; $i<$this->size; $i++) {

//only copy line over to another array when line is not the line to delete

if ($delLine!=$i) {

$modArrayContent[]=$arrayContent[$i];

}

$temp=$size-1;

print $temp;

if ($modArrayContent[count($modArrayContent)-1]=="") {

array_pop($modArrayContent);

}

$temp=array($arrayContent[$delLine],$endofline, "\r\n", "\r","\n");

//$arrayContent=array_diff($arrayContent, $temp);

//print count($arrayContent);

return $arrayContent=array_diff($arrayContent, $temp);

/*print count($modArrayContent);

$arrayContent=$modArrayContent;

print count($arrayContent);*/

//return $arrayContent=$modArrayContent;

}

//modify a line from content array

function modifyLine($modLine,$someString) {

$size=count($arrayContent);

$someString=$someString.$endofline;

for ($i=0; $i<$size; $i++) {

if ($modLine!=$i) {

$modArrayContent[$i]=$arrayContent[$i];

}

else {

$modArrayContent[$i]=$someString;

}

return $arrayContent=$modArrayContent;

}

//show file content, one line at a time

function displayContent() {

for($i=0; $i<$this->size; $i++) {

print "Line No. " . $i . ": " . $arrayContent[$i];

}

//count number of line in file

function countLine() {

$size=count($arrayContent);

return $this->size;

}

//load content of txt as an array of lines

function loadContent($filepath) {

$fh=fopen($filepath,'r');

if (!$fh) {

die ("error opening file.");

}

$count=0;

while (!feof($fh)){

$arrayContent[$count] = fgets($fh) ;

$count++;

}

return $arrayContent;

}

?>

So basically this is what I see on lab6part2menu.php page.

Select your option:

Radio button: Add

Radio button: Modify

Radio button: Delete

Line No. to Delete/Modify = dropdown (doesnt have any values to it... I am assuming it's because the content within the table isn't shown which is indicated by line number 1 to 10 or something.. BUT it has this mean thing:

<br>

<b>Notice</b>: Undefined variable: arrayContent in

<b>/home/..../..../..../public_html/..../Lab6/classes.php</b> on line <b>89</b><br/>)

Content to Add/Modify = Hrs [Dropdown from 1:00-24:00]

Mins[Dropdown from 1:00-59:00]

Day [Dropdown from 1-31]

Month[Dropdown from 1-12]

Year [Whatever year user wants to input]

E-mail[Whatever email user wants to input]

Message[Whatever message user wants to input]

SUBMIT RESET

Thanks!

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Add Modify Delete a single or more lines in PHP

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