DIctionary for SE

add.php

<?php
    include 'index.txt';
    include 'diclib.php';    
    
    $theParts = array('Noun','Adjective','Adverb','Conjunction','Pronoun','Verb','Preposition','Interjection');
    
    $key = $parts = $definition = "";
    
    if ($_SERVER["REQUEST_METHOD"] == "POST") 
    {        
        if(!empty($_POST['newWord']))
        {
            $key = trim($_POST['newWord']);
            foreach($theParts as $wordParts)
            {
                #echo "<br>Testing " . $wordParts . ' and it is ' . $_POST[$wordParts];
                if(!empty($_POST[$wordParts]))
                {
                    $tempPart = trim($_POST[$wordParts]);
                    $parts = $parts . $tempPart . ";";
                }
            } 
            if(strlen($parts) == 0)
            {
                exit("<p>You need at least one part of speech.<p>");
            }
            if(!empty($_POST['newDef']))
            { 
                $definition = trim($_POST['newDef']);
                
                addWord($key, $parts, $definition);
            }
            else
            {
                exit("<p>No definition specified.<p>");
            }
        }
        else
        {
            exit("<p>No word specified.<p>");
        }
    }
?>

diclib.php

    <?php
    function searchForWord($key) 
    {
        $myfile = fopen("dictionary.db", "r") or die("Unable to open file!");
        // Output one line until end-of-file
        $parts = "";
        $definition = "";
        while(!feof($myfile)) 
        {
            $current = explode(" ", fgets($myfile));
            if($current[0] == $key)
            {
                $parts = $current[1];
                for($x = 2; $x < sizeof($current); $x++)
                {
                    $definition = $definition . $current[$x] . " ";
                }
                break;
            }            
        }
        fclose($myfile);
        
        $results = array($key, $parts, $definition);
        return $results;
    }
    
    function addWord($key, $parts, $definition)
    {
        $exists = searchForWord($key);
        if(strlen($exists[1]) > 0)
        {
            echo "<p>Already exists<p>";
            return False;
        }
        
        $myfile = fopen("dictionary.db", "a") or die("Unable to open file!");
        
        $key = trim($key);
        fwrite($myfile, $key . " " . $parts . " " . $definition);
        fclose($myfile);
        echo "<p>Word added!<p>" . "<p>" . $key . "<br>" . $parts . "<br>" . $definition;
        return True;
    }
    
    function close()
    {
        #could probably use for a close function
        echo "<script>window.close();</script>";
    }
    
?>

search.php

<?php

    include 'index.txt';
    include 'diclib.php';

    // define variables and set to empty values
    $key = $parts = $definition = "";
    
    if ($_SERVER["REQUEST_METHOD"] == "POST") 
    {        
        if(!empty($_POST['word']))
        {
            $key = trim($_POST['word']);
            
            
            
            $results = searchForWord($key);
            if(strlen($results[1]) > 0)
            {
                echo '<p>Your word has an entry!<p>';
                echo '<br>' . $key . '<br>';
                $displayParts = explode(';', $results[1]);
                foreach($displayParts as $eachPart)
                {
                    echo $eachPart . ' ';
                }
                echo '<br>' . $results[2] . '<br>';        
            }
            else
            {
                echo '<p>Word doesn\'t exist.<p>';
                echo '<br>' . $key . '<br>';
            }
        }
        else
        {
            echo "<p>No search submitted";
        }
    }
    else
    {
        echo "<p>No search submitted";
    }
?>