number_format_i18n( float $number, int $decimals )

Convert float number to format based on the locale.

Parameters

$number: (float) (Required) The number to convert based on locale.
$decimals: (int) (Optional) Precision of the number of decimal places. Default 0.

Return

(string) Converted number in string format.

Source

File: wp-includes/functions.php

function number_format_i18n( $number, $decimals = 0 ) {
	global $wp_locale;

	if ( isset( $wp_locale ) ) {
		$formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );
	} else {
		$formatted = number_format( $number, absint( $decimals ) );
	}

	/**
	 * Filters the number formatted based on the locale.
	 *
	 * @since WP-2.8.0
	 * @since WP-4.9.0 The `$number` and `$decimals` arguments were added.
	 *
	 * @param string $formatted Converted number in string format.
	 * @param float  $number    The number to convert based on locale.
	 * @param int    $decimals  Precision of the number of decimal places.
	 */
	return apply_filters( 'number_format_i18n', $formatted, $number, $decimals );
}

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Related

Uses

Uses
Uses	Description
wp-includes/plugin.php: apply_filters()	Call the functions added to a filter hook.
wp-includes/functions.php: absint()	Convert a value to non-negative integer.
wp-includes/functions.php: number_format_i18n	Filters the number formatted based on the locale.

Used By

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wp-includes/comment-template.php: comments_popup_link()	Displays the link to the comments for the current post ID.
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wp-admin/includes/class-wp-comments-list-table.php: WP_Comments_List_Table::get_views()
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::get_views()
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wp-admin/includes/ajax-actions.php: _wp_ajax_delete_comment_response()	Sends back current comment total and new page links if they need to be updated.
wp-admin/includes/class-wp-plugin-install-list-table.php: WP_Plugin_Install_List_Table::display_rows()
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wp-admin/includes/class-wp-terms-list-table.php: WP_Terms_List_Table::column_posts()
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Changelog

Changelog
Version	Description
WP-2.3.0	Introduced.