How to Substitute a Character in a String on PHP
The PHP programming language is used to embed interactive elements in an HTML website. HTML itself has no interactive components, so a language like PHP is needed to make a website interactive. The interactive components of a website are usually used to capture data from user input. PHP contains many functions that allow you to manipulate such data. For example, you can replace a character in a string with another character. This can be useful if you are making a website that autocorrects text that users type into it.
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Instructions
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Decide how you will run your PHP code. If you have a PHP server, you can execute code using PHP files. If you do not have access to a PHP server, you can use an online PHP interpreter. Enter the code in this tutorial into either a PHP file or the online PHP interpreter.
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Begin your PHP program with the following statement:
<?php
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Declare a string by writing the following code:
$phrase = "This string ends with the letter z.";
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Substitute the character 'z' with 'x' using the str_replace function, like this:;
$phrase = str_replace($healthy, x, z);
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Conclude your PHP program with the statement below. Your program is now ready to be tested on your PHP server or online PHP interpreter.
?>
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