MT | Swap every instance of a word for another

tribe_str_replace.php

<?php

/*
 * SWAP EVERY INSTANCE OF A WORD FOR ANOTHER
 * See the codex to learn more about WP text domains:
 * http://codex.wordpress.org/Translating_WordPress#Localization_Technology
 * Example Tribe domains: 'tribe-events-calendar', 'tribe-events-calendar-pro'...
 */
function tribe_str_replace ( $translation, $text, $domain ) {

	// Put your custom text here in a key => value pair
	// Example: 'Text you want to change' => 'This is what it will be changed to'
	// The text you want to change is the key, and it is case-sensitive
	// The text you want to change it to is the value
	// You can freely add or remove key => values, but make sure to separate them with a comma
	// The following example changes "tickets" to "seats"
	$custom_text = array(
		'Ticket' => 'Seat',
		'ticket' => 'seat',
		'Tickets' => 'Seat',
		'tickets' => 'seats',
	);

	$tribe_domain_prefixes = array(
		'tribe-',
		'event-',
		'the-events-',
	);

	// Exit if this is not a tribe text domain
	$is_tribe_domain = false;
	foreach( $tribe_domain_prefixes as $prefix ) {
		if( 0 === strpos( $domain, $prefix ) ) {
			$is_tribe_domain = true;
			break;
		}
	}
	if( ! $is_tribe_domain ) return $translation;

	// Does a regex search replace for each pattern
	$translation = str_replace(
		array_keys( $custom_text ),
		$custom_text,
		$translation
	);

	return $translation;
}
add_filter( 'gettext', 'tribe_str_replace', 20, 3 );