Output recent posts and excerpt in Wordpress, not of current page - php

Question

I am trying to output recent posts plus the excerpt onto my homepage using the following code:
<?php
$args = array( 'numberposts' => '3' );
$recent_posts = wp_get_recent_posts( $args );
foreach( $recent_posts as $recent ){
echo '<li><a href="' . get_permalink($recent["ID"]) . '" title="Look '.$recent["post_title"].'" >' . $recent["post_title"].'</a>' . $recent["post_excerpt"] . ' </li> ';
}
?>
This seems to output the title and the permalink just fine, however it does not output the excerpt.
Hope someone can help

Answer 1

put the array in your desired custom post like this in your functions.php
$args = array(
'supports' => array('title','editor','author','excerpt') // by writing these lines an custom field has been added to CMS
);
For retrieving at front end
echo $post->post_excerpt; // this will return you the excerpt of the current post

Answer 2

try this one
<?php
$args = array( 'post_type'=>'post',
'orderby'=>'post_date',
'post_status'=>'publish',
'order' => 'DESC',
'showposts' => '3' );
$recent_posts = get_posts( $args );
foreach( $recent_posts as $recent ){
echo '<li><a href="' . get_permalink($recent->ID) . '" title="Look '.$recent->post_title.'" >' . $recent->post_title.'</a>' . $recent->post_excerpt . ' </li> ';
}
?>
Make sure your post_excerpt is not empty
If you want to add the post_excerpt then use wp_update_post
$my_post = array();
$my_post['ID'] = 37;// it is important
$my_post['post_excerpt'] = 'This is the updated post excerpt.';
wp_update_post( $my_post );
As per your request in comments i am showing you the demo to update the post by copying the post_title in the post_excerpt so here you go
<?php
$args = array( 'post_type'=>'post',
'orderby'=>'post_date',
'post_status'=>'publish',
'order' => 'DESC',
'showposts' => '3' );
$recent_posts = get_posts( $args );
foreach( $recent_posts as $recent ){ // this foreach to add the excerpt
$my_post = array();
$my_post['ID'] = $recent->ID;// it is important
$my_post['post_excerpt'] = $recent->post_content;
wp_update_post( $my_post );
}
foreach( $recent_posts as $recent ){ // this foreach to show the excerpt
echo '<li><a href="' . get_permalink($recent->ID) . '" title="Look '.$recent->post_title.'" >' . $recent->post_title.'</a>' . $recent->post_excerpt . ' </li> ';
}
?>
wp_update_post
Also see wp_insert_post