WordPress at a glance
filter is not described

the_content filter-hook . WP 0.71

Filters the post content.

Usage

add_filter( 'the_content', 'filter_function_name_1979' );
function filter_function_name_1979( $content ){
	// filter...

	return $content;
}
$content(string)
Content of the current post.

Where the hook is called

the_content()
the_content
WP_REST_Posts_Controller::prepare_item_for_response()
the_content
WP_REST_Revisions_Controller::prepare_item_for_response()
the_content
WP_REST_Attachments_Controller::prepare_item_for_response()
the_content
get_the_content_feed()
the_content
do_trackbacks()
the_content
wp_trim_excerpt()
the_content
WC_API_Products::get_product_data()
the_content
wp-includes/post-template.php 247
$content = apply_filters( 'the_content', $content );
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php 1532
'rendered'      => post_password_required( $post ) ? '' : apply_filters( 'the_content', $post->post_content ),
wp-includes/rest-api/endpoints/class-wp-rest-revisions-controller.php 545
'rendered' => apply_filters( 'the_content', $post->post_content ),
wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php 310
'rendered' => apply_filters( 'the_content', $post->post_content ),
wp-includes/feed.php 191
$content = apply_filters( 'the_content', get_the_content() );
wp-includes/comment.php 2679
$excerpt = apply_filters( 'the_content', $post->post_content, $post->ID );
wp-includes/formatting.php 3705
$text = apply_filters( 'the_content', $text );
woocommerce/includes/api/legacy/v1/class-wc-api-products.php 325
'description'        => apply_filters( 'the_content', $product->get_description() ),
woocommerce/includes/api/legacy/v1/class-wc-api-products.php 342
'purchase_note'      => apply_filters( 'the_content', $product->get_purchase_note() ),

Where the hook is used (in WP core)

wp-includes/blocks.php 320
remove_filter( 'the_content', 'wpautop', $priority );
wp-includes/blocks.php 321
add_filter( 'the_content', '_restore_wpautop_hook', $priority + 1 );
wp-includes/blocks.php 341
add_filter( 'the_content', 'wpautop', $current_priority - 1 );
wp-includes/blocks.php 342
remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority );
wp-includes/class-wp-embed.php 32
add_filter( 'the_content', array( $this, 'run_shortcode' ), 8 );
wp-includes/class-wp-embed.php 39
add_filter( 'the_content', array( $this, 'autoembed' ), 8 );
wp-includes/default-filters.php 142
add_filter( $filter, 'capital_P_dangit', 11 );
wp-includes/default-filters.php 172
add_filter( 'the_content', 'do_blocks', 9 );
wp-includes/default-filters.php 173
add_filter( 'the_content', 'wptexturize' );
wp-includes/default-filters.php 174
add_filter( 'the_content', 'convert_smilies', 20 );
wp-includes/default-filters.php 175
add_filter( 'the_content', 'wpautop' );
wp-includes/default-filters.php 176
add_filter( 'the_content', 'shortcode_unautop' );
wp-includes/default-filters.php 177
add_filter( 'the_content', 'prepend_attachment' );
wp-includes/default-filters.php 178
add_filter( 'the_content', 'wp_make_content_images_responsive' );
wp-includes/default-filters.php 519
add_filter( 'the_content', 'do_shortcode', 11 ); // AFTER wpautop()
wp-includes/template-loader.php 58
remove_filter( 'the_content', 'prepend_attachment' );