A simple program to count the vowels, occurrence of vowels in a given string in PHP programming language.
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Program Listings
index.php
<html>
<head>
<title> Count Vowels in PHP </title>
</head>
<body>
<style type="text/css">
body {
font-family: arial;
size: 12px;
};
</style>
<?php
error_reporting(0);
$val_str = strtolower($_POST['val_str']);
if(isset($_POST['submit'])) {
$results = "<h4>The Number of Vowels : "
.count_Vowels($val_str)."</h4>";
$display_strings = "<h4>The List of Vowels : "
.strip_Consonants($val_str)."</h4>";
$display_vowels = "<h4>Number of Letter A : "
.count_a($val_str)."</h4>";
$display_vowels .= "<h4>Number of Letter E : "
.count_e($val_str)."</h4>";
$display_vowels .= "<h4>Number of Letter I : "
.count_i($val_str)."</h4>";
$display_vowels .= "<h4>Number of Letter O : "
.count_o($val_str)."</h4>";
$display_vowels .= "<h4>Number of Letter U : "
.count_u($val_str)."</h4>";
}
if(isset($_POST['clear'])) {
$val_str = "";
$results = "";
$display_strings = "";
}
function count_Vowels($string)
{
preg_match_all('/[aeiou]/i', $string, $matches);
return count($matches[0]);
}
function strip_Consonants($string)
{
$trans = array("b" => "","c"=>"","d"=>"","f"=>"","g"=>"",
"h" => "","j"=>"","k"=>"","l"=>"","m"=>"",
"n" => "","p"=>"","q"=>"","r"=>"","s"=>"",
"t" => "","v"=>"","x"=>"","z"=>"");
return strtoupper(strtr($string, $trans));
}
function count_a($string)
{
preg_match_all('/[a]/i', $string, $matches);
return count($matches[0]);
}
function count_e($string)
{
preg_match_all('/[e]/i', $string, $matches);
return count($matches[0]);
}
function count_i($string)
{
preg_match_all('/[i]/i', $string, $matches);
return count($matches[0]);
}
function count_o($string)
{
preg_match_all('/[o]/i', $string, $matches);
return count($matches[0]);
}
function count_u($string)
{
preg_match_all('/[u]/i', $string, $matches);
return count($matches[0]);
}
?>
<h2> Count Vowels in PHP </h2>
<p> Mr. Jake Rodriguez Pomperada,MAED-IT, MIT </p>
<form method="post">
<p>Give a String <input
type="text" name="val_str" size=50
value="<?php echo $val_str; ?>" autofocus required /></p>
<input type="submit" name="submit"
title="Click here to count the vowels."
value="Submit" />
<input type="submit" name="clear"
title="Click here to clear the textbox."
value="Clear" />
</form>
<?php
echo $results;
echo $display_strings;
echo $display_vowels;
?>
</body>
</html>
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