This is my first PHP script (although I like to think I'm a good general coder).
The script accepts a number from the user, uses it to generate a regular expression, and then returns all dictionary words that match that expression.
It's currently live here, and I'd appreciate any comments on style, security, best practices, and even efficiency. Please ignore the Html for now - it's got a WordPress template to be inserted into later on.
<html>
<head>
<title>Major Analysis Number Encoder</title>
</head>
<body>
<H1>Tool for finding keywords for major analysis</h1>
This tool uses the numbering system shown by Derren Brown in the
excellent book
<a
href="http://www.amazon.co.uk/Tricks-Mind-Derren-Brown/dp/1905026269">Trick
of the mind</a>. For a (much better) tool that uses the older
numbering system see
<a href="http://www.rememberg.com/">http://www.rememberg.com/</a><br>
<form action="majorEncoder.php" method="post">
<label for="firstname">Number to encode (at least three digits
please):</label> <input type="text" id="targetNumber"
name="targetNumber" /><br /> <input type="submit"
value="Generate results" name="submit" />
</form>
<?php
if ($_POST != null) {
$target = $_POST ['targetNumber'];
if (strlen ( $target ) >= 3) {
$f = '[waeiouyc]?';
$regex = '/^' . $f . $target;
echo 'You entered the target' . $target . '<br><br>';
$regex = str_replace ( '1', 'l' . $f, $regex );
$regex = str_replace ( '2', 'n' . $f, $regex );
$regex = str_replace ( '3', 'm' . $f, $regex );
$regex = str_replace ( '4', 'r' . $f, $regex );
$regex = str_replace ( '5', '[fv]' . $f, $regex );
$regex = str_replace ( '6', '[bp]' . $f, $regex );
$regex = str_replace ( '7', 't' . $f, $regex );
$regex = str_replace ( '8', '[sc]h' . $f, $regex );
$regex = str_replace ( '9', '[gd]' . $f, $regex );
$regex = str_replace ( '0', '[sz]' . $f, $regex );
$lines = file ( 'words.txt' );
$fl_array = preg_grep ( $regex . '$/', $lines );
if (sizeof ( $fl_array ) > 0) {
echo 'Exact matches: <br>';
foreach ( $fl_array as $element ) {
echo $element . '<br>';
}
echo '<br>';
}
$fl_array = preg_grep ( $regex . '/', $lines );
if (sizeof ( $fl_array ) > 0) {
echo 'Matches that allow trailing characters: <br>';
foreach ( $fl_array as $element ) {
echo $element . '<br>';
}
} else {
echo "No matches found for the input $target";
}
} else {
echo 'Please enter at least three digits<br>';
}
}
?>
</body>
</html>
