I need to delete a specific string set from a txt file. Currently, the code works in a similar manner to post the data directly to the file. However, trying to remove the same data, inputted in the same manner, will not allow it. In it's current state, the code looks like this for the string removal.
We were NOT allowed to use prebuilt sorting functions or use functions like str_replace or similar code.
Here is the current code for the string removal:
$blankReplace = "";
$found = false;
$fileData = file($fileInput,FILE_IGNORE_NEW_LINES);
for($i = 0; ($i < count($fileData)) && != $found; $i ++)
{
if($fullNameAndEmail == $fileData[$i])
{
$pos = $i;
$name = $fileData[$i];
$found = true;
}
}
if($found == true)
{
// Exit path. Go to for($j = 0) path
unset($fileData[$pos]);
shuffle($fileData);
}
else
{
//Error Msg
}
$writeToFile = fopen($inputFile,'w+');
for($j = 0;$j<count($fileData);$j++)
{
if(trim($fileData[$j]) != " ")
{
$rewrittenList = trim($fileData[$j])."\n";
fwrite($writeToFile, $rewrittenList);
}
}
The code outputs an error of T_IS_NOT_EQUAL in code upon researching the error. The data comes in as direct data from the file() read, so it should work. The error is pointing at for($i = 0; ($i < count($fileData)) && != $found; $i ++) line currently, but likely also references a similar occurrence in the code.
The data is inputted in the format:
firstname lastname emailaddress
I also need to be able to handle if multiple instances of the mentioned name occur so say we have:
Matt Person emailaddr@email.com
Matt Person emailaddr@email.com
That it will delete one instance, and not all, in cases similar to this.
Any help is appreciated, Thank you for your time in advance.
EDIT:
Example input:
Matthew person person@email.com
John holton person@email.com
Person Name person@gmail.com
The user will input a person's name (in format above) and it will result in removing a person. Say they input into the form:
$fullName = "Matthew person";
$emailAddr = "person@email.com";
The output will edit the data to put the data into a single line again
$fullNameAndEmail = $firstName." ".$lastName." ".$emailAddr;
The output of the code, in this example will remove "Matthew person person@email.com"
So the output in the text file will output:
John holton person@email.com
Person Name person@gmail.com
Edit 2: Code in it's current state
<!doctype HTML>
<html>
<meta charset="utf-8">
<head>
<title>Updating the guest book!</title>
</head>
<body>
<?php
$fileInput = "guestBook.txt";
$fileInputInData = file_get_contents($fileInput); // Gets data from file
$testBool = file_exists($fileInput);
$fullName = trim($_POST["fullName"]);
$emailAddr = trim($_POST["emailAddr"]);
$fileSize = filesize($fileInput);
if(!empty($fullName) and !empty($emailAddr))
{
if($testBool == 0)
{
echo "There was an issue with the file. Please have it checked.</br>";
}
else
{
echo "Made it into else path for testBool </br>";
if($fileSize > 0)
{ #code for truth
echo "Made it into filesize check. Filesize: $fileSize </br>";
$fullNameLen = strlen($fullName);
$emailAddrLen = strlen($emailAddr);
$fullNameArr = explode(" ", $fullName);
$firstName = trim($fullNameArr[0]);
$lastName = trim($fullNameArr[1]);
$fullNameToWrite =$firstName." ".$lastName;
$emailAddrCheck=substr_count($emailAddr, "@");
if ($emailAddrCheck == 1)
{
echo "Email address check passed</br>";
#email addr entered right path
$fullNameAndEmail =$fullNameToWrite." ".$emailAddr." has signed in.\n";
$inputFile = "guestBook.txt";
//$pos = strpos($writeToFile, $fullNameAndEmail);
//$writeToFileEx = explode("\n", $fileInputInData);
$blankReplace = "";
$str = $fileInputInData;
$find = $fullNameAndEmail;
$arr=explode("\n", $str);
Foreach($arr as $key => &$line)
{
If($line == $find)
{
Unset($arr[$key]);
shuffle($arr);
}
}
$writeToFile = fopen($inputFile,'w+');
$rewrittenList = trim($arr)."\n";
fwrite($writeToFile, $rewrittenList);
fclose($inputFile);
}
else {
echo "Email address check failed. Invalid email address entered. </br>
Line 55 occured.</br>";
#email addr entered wrong message
}
//asort(array) sorts array low to high (ascending)
//arsort(array) sorts array high to low (descending)
}
else
{
echo "Did not make it into filesize check. Filesize: $fileSize. Line 63 occured </br>";
}
}
}
else if (empty($fullName) or empty($emailAddr))
{
echo "Error! Line 23: One of the inputs was left empty. Line 69 occured </br>";
}
else
{
echo "Error! Line 23: Did not detect any values in either data area,</br>and program
did not go into first error. Line 73 occured </br>";
}
?>
<br>
</body>
</html>
