wp-includes/class-wp-styles.php:405Generates an enqueued style's fully-qualified URL.
$srcstring$verstring|false|null$handlestringstringOne hook fires while WP_Styles::_css_href() runs, in this order:
Filters an enqueued style's fully-qualified URL.
public function _css_href( $src, $ver, $handle ) { if ( ! is_bool( $src ) && ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && str_starts_with( $src, $this->content_url ) ) ) { $src = $this->base_url . $src; } $ver_to_add = ''; if ( empty( $ver ) && null !== $ver && is_string( $this->default_version ) ) { $ver_to_add = $this->default_version; } elseif ( is_scalar( $ver ) ) { $ver_to_add = (string) $ver; } $added_args = (string) ( $this->args[ $handle ] ?? '' ); if ( '' !== $ver_to_add || '' !== $added_args ) { $fragment = strstr( $src, '#' ); if ( false !== $fragment ) { $src = substr( $src, 0, -strlen( $fragment ) ); } if ( '' !== $ver_to_add ) { $src .= ( str_contains( $src, '?' ) ? '&' : '?' ) . 'ver=' . rawurlencode( $ver_to_add ); } if ( '' !== $added_args ) { $src .= ( str_contains( $src, '?' ) ? '&' : '?' ) . $added_args; } if ( false !== $fragment ) { $src .= $fragment; } } /** * Filters an enqueued style's fully-qualified URL. * * @since 2.6.0 * * @param string $src The source URL of the enqueued style. * @param string $handle The style's registered handle. */ $src = apply_filters( 'style_loader_src', $src, $handle ); return esc_url( $src ); }Introduced in 2.6.0. One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
$ver retyped from string to string|false|null.verified against sourcesrc/wp-includes/class-wp-styles.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.