WP_Scripts::localize( string $handle, string $object_name, array $l10n ): bool

Source

public function localize( $handle, $object_name, $l10n ) {
	if ( 'jquery' === $handle ) {
		$handle = 'jquery-core';
	}

	if ( is_array( $l10n ) && isset( $l10n['l10n_print_after'] ) ) { // back compat, preserve the code in 'l10n_print_after' if present.
		$after = $l10n['l10n_print_after'];
		unset( $l10n['l10n_print_after'] );
	}

	if ( ! is_array( $l10n ) ) {
		_doing_it_wrong(
			__METHOD__,
			sprintf(
				/* translators: 1: $l10n, 2: wp_add_inline_script() */
				__( 'The %1$s parameter must be an array. To pass arbitrary data to scripts, use the %2$s function instead.' ),
				'<code>$l10n</code>',
				'<code>wp_add_inline_script()</code>'
			),
			'5.7.0'
		);

		if ( false === $l10n ) {
			// This should really not be needed, but is necessary for backward compatibility.
			$l10n = array( $l10n );
		}
	}

	if ( is_string( $l10n ) ) {
		$l10n = html_entity_decode( $l10n, ENT_QUOTES, 'UTF-8' );
	} elseif ( is_array( $l10n ) ) {
		foreach ( $l10n as $key => $value ) {
			if ( ! is_scalar( $value ) ) {
				continue;
			}

			$l10n[ $key ] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8' );
		}
	}

	$script = "var $object_name = " . wp_json_encode( $l10n ) . ';';

	if ( ! empty( $after ) ) {
		$script .= "\n$after;";
	}

	$data = $this->get_data( $handle, 'data' );

	if ( ! empty( $data ) ) {
		$script = "$data\n$script";
	}

	return $this->add_data( $handle, 'data', $script );
}

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