: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
echo '<p class="item-price item-price-hidden ' . esc_attr( $hidden ) . '">';
wp_kses( /* translators: %1$s - Item Price value. */
__( 'Price: <span class="price">%1$s</span>', 'wpforms-lite' ),
$hidden = ! $is_single ? 'wpforms-hidden' : '';
$this->field_preview_option( 'quantity', $field, [ 'class' => $hidden ] );
echo '<div class="single-item-user-defined-block">';
'<input type="text" placeholder="%s" class="primary-input" value="%s" readonly>',
esc_attr( $placeholder ),
$hidden = $this->is_min_price_passed( $field ) ? 'wpforms-hidden' : '';
echo '<i class="fa fa-exclamation-triangle ' . esc_attr( $hidden ) . '"></i>';
$this->field_preview_option( 'description', $field );
$hidden = ! isset( $field['min_price'] ) || empty( (float) wpforms_sanitize_amount( $field['min_price'] ) ) ? 'wpforms-hidden' : '';
echo '<div class="item-min-price ' . esc_attr( $hidden ) . '">';
wp_kses( /* translators: %1$s - Minimum Price value. */
__( 'Minimum Price: <span class="min-price">%1$s</span>', 'wpforms-lite' ),
echo '<p class="item-price-hidden-note">';
esc_html_e( 'Note: Item type is set to hidden and will not be visible when viewing the form.', 'wpforms-lite' );
* Field display on the form front-end.
* @param array $field Field data and settings.
* @param array $deprecated Deprecated field attributes.
* @param array $form_data Form data and settings.
public function field_display( $field, $deprecated, $form_data ) { // phpcs:ignore Generic.Metrics.CyclomaticComplexity.TooHigh
// Shortcut for easier access.
$primary = $field['properties']['inputs']['primary'];
$field_format = ! empty( $field['format'] ) ? $field['format'] : self::FORMAT_SINGLE;
// Placeholder attribute is only applicable to password, search, tel, text and url inputs, not hidden.
// aria-errormessage attribute is not allowed for hidden inputs.
if ( ! $this->is_user_defined( $field ) ) {
unset( $primary['attr']['placeholder'], $primary['attr']['aria-errormessage'] );
switch ( $field_format ) {
case self::FORMAT_SINGLE:
case self::FORMAT_HIDDEN:
if ( $field_format === self::FORMAT_SINGLE ) {
$price = ! empty( $field['price'] ) ? $field['price'] : 0;
$field_label = str_replace( '{price}', '<span class="wpforms-price">' . esc_html( wpforms_format_amount( wpforms_sanitize_amount( $price ), true ) ) . '</span>', $this->get_single_item_price_label( $field ) );
echo '<div class="wpforms-single-item-price-content">';
echo '<div class="wpforms-single-item-price ' . wpforms_sanitize_classes( $primary['class'], true ) . '">';
$this->display_quantity_dropdown( $field );
'<input type="hidden" %s>',
wpforms_html_attributes( $primary['id'], $primary['class'], $primary['data'], $primary['attr'] ) // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
'<input type="text" %s>',
wpforms_html_attributes( $primary['id'], $primary['class'], $primary['data'], $primary['attr'] ) // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
* Validate field on form submit.
* @param int $field_id Field ID.
* @param string $field_submit Submitted field value (raw data).
* @param array $form_data Form data and settings.
public function validate( $field_id, $field_submit, $form_data ) {
$is_required = ! empty( $form_data['fields'][ $field_id ]['required'] );
// If field is required, check for data.
empty( $field_submit ) &&
wpforms()->get( 'process' )->errors[ $form_data['id'] ][ $field_id ] = wpforms_get_required_label();
* Whether to validate amount or not of the Payment Single item field.
* @param bool $validate Whether to validate amount or not. Default true.
* @param int $field_id Field ID.
* @param string $field_submit Field data submitted by a user.
* @param array $form_data Form data and settings.
$validate_amount = apply_filters( 'wpforms_forms_fields_payment_single_field_validate_amount', true, $field_id, $field_submit, $form_data );
// If field format is not user provided, validate the amount posted.
! empty( $field_submit ) &&
! $this->is_user_defined( $form_data['fields'][ $field_id ] )
$price = wpforms_sanitize_amount( $form_data['fields'][ $field_id ]['price'] );
$submit = wpforms_sanitize_amount( $field_submit );
if ( $price !== $submit ) {
wpforms()->get( 'process' )->errors[ $form_data['id'] ][ $field_id ] = esc_html__( 'Amount mismatch', 'wpforms-lite' );
// If field format is provided by user, additionally compare the amount with a minimum price.
! empty( $field_submit ) &&
$this->is_user_defined( $form_data['fields'][ $field_id ] )
$submit = wpforms_sanitize_amount( $field_submit );
wpforms()->get( 'process' )->errors[ $form_data['id'] ][ $field_id ] = esc_html__( 'Amount can\'t be negative' , 'wpforms-lite' );
if ( empty( $form_data['fields'][ $field_id ]['min_price'] ) && ! $is_required ) {
$min_price = wpforms_sanitize_amount( $form_data['fields'][ $field_id ]['min_price'] );
if ( $submit < $min_price ) {
wpforms()->get( 'process' )->errors[ $form_data['id'] ][ $field_id ] = esc_html__( 'Amount can\'t be less than the required minimum.' , 'wpforms-lite' );
* Format and sanitize field.
* @param int $field_id Field ID.
* @param string $field_submit Field data submitted by a user.
* @param array $form_data Form data and settings.
public function format( $field_id, $field_submit, $form_data ) {
$field = $form_data['fields'][ $field_id ];
$name = ! empty( $field['label'] ) ? sanitize_text_field( $field['label'] ) : '';
// Only trust the value if the field is user format.
if ( $this->is_user_defined( $field ) ) {
$amount = wpforms_sanitize_amount( $field_submit );
$amount = wpforms_sanitize_amount( $field['price'] );
'value' => wpforms_format_amount( $amount, true ),
'amount' => wpforms_format_amount( $amount ),
'currency' => wpforms_get_currency(),
'id' => absint( $field_id ),
'type' => sanitize_key( $this->type ),
if ( $this->is_payment_quantities_enabled( $field ) ) {
$field_data['quantity'] = $this->get_submitted_field_quantity( $field, $form_data );
wpforms()->get( 'process' )->fields[ $field_id ] = $field_data;
* Display the minimum price description for the field.
* @param array $field Field data and settings.
* @param array $form_data Form data and settings.
public function field_minimum_price_description( $field, $form_data ) {
if ( ! $this->is_user_defined( $field ) || ! isset( $field['min_price'] ) || empty( (float) wpforms_sanitize_amount( $field['min_price'] ) ) ) {
$description = sprintf( /* translators: %1$s - Minimum Price value. */
__( 'Minimum Price: %1$s', 'wpforms-lite' ),
wpforms_format_amount( wpforms_sanitize_amount( $field['min_price'] ), true )
'<div class="wpforms-field-description">%s</div>',
* Add class to the builder field preview.
* @param string $css Class names.
* @param array $field Field properties.
public function preview_field_class( $css, $field ) {
$css = parent::preview_field_class( $css, $field );
if ( $field['type'] !== $this->type ) {
if ( ! $this->is_user_defined( $field ) ) {
if ( $this->is_min_price_passed( $field ) ) {
$css .= ' min-price-warning';
* Define if format of field is User Defined.
* @param array $field Field data.
private function is_user_defined( $field ) {
return ! empty( $field['format'] ) && $field['format'] === self::FORMAT_USER;
* Define if format of field is Single Item.
* @param array $field Field data.
private function is_single_item( $field ) {
return empty( $field['format'] ) || $field['format'] === self::FORMAT_SINGLE;
* Define if format of field is Hidden.
* @param array $field Field data.
private function is_hidden( $field ) {
return empty( $field['format'] ) || $field['format'] === self::FORMAT_HIDDEN;
* Define if minimum price is equal or more than default one.
* @param array $field Field data.
private function is_min_price_passed( $field ) {
return isset( $field['min_price'] ) && (float) wpforms_sanitize_amount( $field['min_price'] ) >= (float) self::MIN_PRICE_DEFAULT;