my-pmpro-change-text-for-one-level.php

<?php
/**
 * This recipe will change the name of "Discount Code" to something else for one level
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */


function change_discount_code_text( $translated_text, $text, $domain ) {
    global $pmpro_pages;
    $pmpro_level = isset( $_REQUEST['level'] ) ? absint( $_REQUEST['level'] ) : 0;
    if ( is_page( $pmpro_pages['checkout'] ) && $pmpro_level == 5 ) {
        /* original translated text code */
        switch ( $text ) {
            case 'Discount Code':
                $translated_text = __( 'Student Code', 'pmpro' );
                break;
            case 'Click here to change your discount code':
                $translated_text = __( 'Click here to change your student code', 'pmpro' );
                break;
            case 'Do you have a discount code?':
                $translated_text = __( 'Do you have a student code?', 'pmpro' );
                break;
            case 'Click here to enter your discount code':
                $translated_text = __( 'Click here to enter your student code', 'pmpro' );
                break;
        }
        
    }
    return $translated_text;
      /* end original translated text code */
}
add_action( 'wp', function() {
    add_filter( 'gettext', 'change_discount_code_text', 20, 3 );
} );

function change_discount_code_text2( $translated_text, $text, $domain ) {
    switch ( $translated_text ) {
       
            case 'Click here to change your discount code' :
            $translated_text = __( 'Click here to change your code', 'paid-memberships-pro' );
            break;
    }
    return $translated_text;
}
add_filter( 'gettext', 'change_discount_code_text2', 20, 3 );