How to fix the misspelling of WordPress in your post’s content?

Add the following function into your newly written plugin (or functions.php file of your theme), to correct misspellings of wordpress to WordPress:

function thefirst_content_replace( $content ) {
    return str_replace( ‘wordpress’, ‘WordPress’, $text );
}
add_filter( ‘the_content’, ‘thefirst_content_replace’ );

thefirst_content_replace is the unique name we’ve given our function. When adding new functions never start them with wp_ – this to prevent any future incompatibilities with WordPress code functions which all use the prefix wp_.

Our PHP function takes ( $text ) as the argument, and returns the 1st string ‘wordpress’ replaced with the 2nd string ‘WordPress’.

We’ve added a filter ( add_filter ) to our plugin to tell our function ( thefirst_content_replace ) to work on the text we’ve selected, which in this case is the entire post content ( the_content ).