Cant figure out how to solve these errors.

Here is my current code:

'."Use only characters A-Z".''; echo ''."".''; } elseif(strlen($lname)>=20 || ctype_alpha(str_replace(' ','',$lname))==0) { echo "Invalid Last Name"; echo '

'."Name must be at most 20 alphabetic characters".'

'; echo ''."".''; } elseif(strlen($email)'."Email cannot exceed 20 characters".''; echo ''."".''; } elseif(ctype_digit($pNumber)==false) { echo "Invalid Phone Number."; echo '

'."Phone number must contain only numeric characters; No Dashes".'

'; echo ''."".''; } else { if(file_exists("customerInfo.txt" == 0) || filesize("customerInfo.txt")==0) { $infoWriter = fopen("customerInfo.txt","w"); fwrite($infoWriter,"$lname:$fname:$email:$pNumber".PHP_EOL); fclose($infoWriter); echo '

'; echo "Information Added"; echo '

'; echo ''."".''; } else { #Writes New Entry to Existing File $infoWriter = fopen("customerInfo.txt","a+"); fwrite($infoWriter,"$lname:$fname:$email:$pNumber".PHP_EOL); fclose($infoWriter); #Stores New File to Array $fileReader = file("customerInfo.txt",FILE_SKIP_EMPTY_LINES); $exploded = array(); for($i=0;$i'."".''; } } echo '

'; echo "Information Added"; echo '

'; echo ''; echo ''; echo ''; echo ''; echo ''; echo ''; echo ''; for($i=0;$i'; echo ''; echo ''; echo ''; echo ''; echo ''; } Invalid Email Address Email cannot exceed 20 characters Try again? Information Added Notice: Undefined variable: explodedFix in C:lxampplhtdocsMyHomework TestllupdateInfo.php on line 125 Warning: sizeof): Parameter must be an array or an object that implements Countable in C:lxamppihtdocsMyHomeworkTestllupdateInfo.php on line 125 First NameLast Nameail hoe Number

'; echo "First Name"; echo '	'; echo "Last Name"; echo '	'; echo "Email"; echo '	'; echo "Phone Number"; echo '
'; echo $explodedFix[$i][0]; echo '	'; echo $explodedFix[$i][1]; echo '	'; echo $explodedFix[$i][2]; echo '	'; echo $explodedFix[$i][3]; echo '