Create 2 text field web form where 1 field allows the user to specify the text spring to search for and the other field allows the user to specify the replacement string. the page should also show a sentence of your choosing that the search and replace will be performed on.

<?php

$error = '';

$string = "This is a sample string. Hello World";

if(isset($_POST["modify_str"])){

$show_form = false;

extract($_POST);

// check that user entered some value

if(empty($string_search)){

$error += 'Please fill out the string to be searched for <br>';

$show_form = true;

}

// check that user entered some value

if(empty($string_replace)){

$error += "Please fill out the string/word to be replaced for <br>";

$show_form = true;

}

// if user has entered some value, then replace it in the string using the str_replace function and print the string after modification

if (!$show_form){

$string = str_replace($string_search, $string_replace, $string);

echo "String after modification: <br>";

echo $string;

}

}

else

{

$show_form = true;

}

if($show_form)

{

?>

Please select any word to search for and replace for in the following string <br>

<?php echo $string; ?>

<br> <br>

<form action="" method="post">

<label for="string_search"> String to search for: </label>

<input type="text" name="string_search" id="string_search" required="required" /> <br> <br>

<label for="string_replace"> Replace with: </label>

<input type="text" name="string_replace" id="string_replace" required="required" /> <br> <br>

<input type="submit" id="modify_str" name="modify_str" value="Modify String"/>

</form>

<?php

}

?>

Explanation:

The program was written with php.

It is designed such that it can create 2 text field web form where 1 field allows the user to specify the text spring to search for and the other field allows the user to specify the replacement string.

See answer for the program code.

answer; i believe the correct answer is (classes);

i just did so your welcome!