From 899e7d3800c327106daf5422972f2eed551793dc Mon Sep 17 00:00:00 2001
From: desrosj <desrosj@git.wordpress.org>
Date: Thu, 21 Mar 2019 12:44:54 +0000
Subject: [PATCH] Posts, Post Types: Add type parameter to `post_exists()`.

This allows post exists checks scoped to a specific post type.

Props sgarza, birgire, swissspidy.
Fixes #37406.
Built from https://develop.svn.wordpress.org/trunk@44959


git-svn-id: http://core.svn.wordpress.org/trunk@44790 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/post.php | 18 +++++++++++++-----
 wp-includes/version.php    |  2 +-
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index 482d948bbc..5fcb76e544 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -731,23 +731,26 @@ function get_default_post_to_edit( $post_type = 'post', $create_in_db = false )
 }
 
 /**
- * Determine if a post exists based on title, content, and date
+ * Determines if a post exists based on title, content, date and type.
  *
  * @since 2.0.0
+ * @since 5.2.0 Added the `$type` parameter.
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
- * @param string $title Post title
- * @param string $content Optional post content
- * @param string $date Optional post date
+ * @param string $title   Post title.
+ * @param string $content Optional post content.
+ * @param string $date    Optional post date.
+ * @param string $type    Optional post type.
  * @return int Post ID if post exists, 0 otherwise.
  */
-function post_exists( $title, $content = '', $date = '' ) {
+function post_exists( $title, $content = '', $date = '', $type = '' ) {
 	global $wpdb;
 
 	$post_title   = wp_unslash( sanitize_post_field( 'post_title', $title, 0, 'db' ) );
 	$post_content = wp_unslash( sanitize_post_field( 'post_content', $content, 0, 'db' ) );
 	$post_date    = wp_unslash( sanitize_post_field( 'post_date', $date, 0, 'db' ) );
+	$post_type    = wp_unslash( sanitize_post_field( 'post_type', $type, 0, 'db' ) );
 
 	$query = "SELECT ID FROM $wpdb->posts WHERE 1=1";
 	$args  = array();
@@ -767,6 +770,11 @@ function post_exists( $title, $content = '', $date = '' ) {
 		$args[] = $post_content;
 	}
 
+	if ( ! empty( $type ) ) {
+		$query .= ' AND post_type = %s';
+		$args[] = $post_type;
+	}
+
 	if ( ! empty( $args ) ) {
 		return (int) $wpdb->get_var( $wpdb->prepare( $query, $args ) );
 	}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b22d3d3499..927c89d7f5 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2-alpha-44958';
+$wp_version = '5.2-alpha-44959';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.