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PHP String

Write a PHP program to reverse the string

Description:
Write a PHP program to reverse the string.

Instructions:

  • You can use any string related built-in Function.
  • You can use only one variable.

View Solution/Program:

<?php
$str = "Tutorials Class";
echo strrev($str);
?>
Tutorials Class - Output Window

ssalC slairotuT

Write a PHP program to find the length of the string

Description:
Write a PHP program to find the length of the string.

Instructions:

  • You have to use one variable.
  • You must use a built-in PHP String Function.

View Solution/Program:

<?php
$str = "Tutorials Class";
echo strlen($str);
?>
Tutorials Class - Output Window

15

Write a PHP program to count the words in the string

Description:
Write a PHP program to count the words in the string.

Instructions:

  • You can use only one variable.
  • You can use PHP built-in String Function.
View Solution/Program
<?php
$sample_words = "This is Tutorials Class, learn programming tutorials here.";
echo str_word_count($sample_words);
?>
Tutorials Class - Output Window

8

Write a PHP program to convert a string into uppercase

Description:
Write a PHP program to convert all the characters inside the string into uppercase.

Instructions:

  • You can use only one variable.
  • You should use a PHP built-in string Function
View Solution/Program
<?php
$str = "Tutorials Class";
echo strtoupper($str);
?>
Tutorials Class - Output Window

TUTORIALS CLASS

PHP Array to String Conversion (favourite colours chosen by user)

Description:
Write an exercise for PHP Array to String Conversion.

  • Create a form that accept name as well as colors
  • After submission, form data will be sent to another page
  • Display select colors (as a list) and user name
  • User name & colors selection is mandatory

View Solution/Program 

<html>
<head>
<title>
array to string
</title>
</head>
<body>
	<form action="data.php" method="post">
		Username: <input type="text" name="username" placeholder="enter name" required/><br/><br/> 
		Select your favourite colors:<br/>
		Red<input type="checkbox" name="check_list[]" value="red"/><br/>
		Blue<input type="checkbox" name="check_list[]" value="blue"/><br/>
		Green<input type="checkbox" name="check_list[]" value="green"/><br/>
		Yellow<input type="checkbox" name="check_list[]" value="yellow"/><br/>
		Pink<input type="checkbox" name="check_list[]" value="pink"/><br/>
		Black<input type="checkbox" name="check_list[]" value="black"/><br/>
		White<input type="checkbox" name="check_list[]" value="white"/><br/><br/>
		<input type="submit" name="submit" value="Submit"/><br/>
	</form>
</body>
</html>
<?php
if (isset($_POST['submit'])) {
    if (!empty($_POST['check_list'])) {
        // Counting number of checked checkboxes.
        $checked_count = count($_POST['check_list']);
        $name = $_POST['username'];
        echo $name . " 's favourite colors are " . $checked_count . " option(s): <br/>";
        // Loop to store and display values of individual checked checkbox.
        foreach ($_POST['check_list'] as $selected) {
            echo "<p>" . $selected . "</p>";
        }
    } else {
        echo "<b>Please Select Atleast One Option.</b>";
    }
}