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Function Reference/wp attachment is image

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Description

This function determines if a post's attachment is an image. It returns TRUE if the attachment is an image, FALSE if not. The accepted file extensions/mime types are: .jpg, .jpeg, .gif, .png.

Usage

 <?php wp_attachment_is_image( $post_id ); ?> 

Parameters

$post_id
(int) (optional) Integer ID of the post.
Default: 0

Return Values

(bool) 
TRUE if the attachment is an image, FALSE if not.

Example

To check if post ID 37's attachment is an image: 

<?php
  $id = 37;
  if ( wp_attachment_is_image( $id ) ) {
    echo "Post ".$id." is an image!";
  } else {
    echo "Post ".$id." is not an image.";
  }
?>

Notes

Change Log

Since: 2.1.0

Source File

wp_attachment_is_image() is located in wp-includes/post.php.

Related

Conditional Tags: comments_open(), is_404(), is_admin(), is_admin_bar_showing(), is_archive(), is_attachment(), is_author(), is_category(), is_comments_popup(), is_date(), is_day(), is_feed(), is_front_page(), is_home(), is_local_attachment(), is_multi_author, is_month(), is_new_day(), is_page(), is_page_template(), is_paged(), is_plugin_active(), is_plugin_active_for_network(), is_plugin_inactive(), is_plugin_page(), is_post_type_archive(), is_preview(), is_search(), is_single(), is_singular(), is_sticky(), is_tag(), is_tax(), is_taxonomy_hierarchical(), is_time(), is_trackback(), is_year(), in_category(), in_the_loop(), is_active_sidebar(), is_active_widget(), is_blog_installed(), is_rtl(), is_dynamic_sidebar(), is_user_logged_in(), has_excerpt(), has_post_thumbnail(), has_tag(), pings_open(), email exists(), post_type_exists(), taxonomy_exists(), term_exists(), username exists(), wp_attachment_is_image(), wp_script_is()

See also index of Function Reference and index of Template Tags.
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