Deprecate it.

sirreal · sirreal · commit 881191dc74f1 · 2025-08-21T16:48:18.000+02:00
diff --git a/src/wp-includes/kses.php b/src/wp-includes/kses.php
@@ -1818,10 +1818,13 @@ function wp_kses_no_null( $content, $options = null ) {
  *
  * @since 1.0.0
  *
+ * @deprecated 6.9.0 Not necessary since the `e` PCRE modifier was removed in PHP 7.0.
+ *
  * @param string $content String to strip slashes from.
  * @return string Fixed string with quoted slashes.
  */
 function wp_kses_stripslashes( $content ) {
+	_deprecated_function( __FUNCTION__, '6.9.0' );
 	return preg_replace( '%\\\\"%', '"', $content );
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1818,10 +1818,13 @@ function wp_kses_no_null( $content, $options = null ) {`
`1818`	`1818`	`*`
`1819`	`1819`	`* @since 1.0.0`
`1820`	`1820`	`*`
	`1821`	+ * @deprecated 6.9.0 Not necessary since the `e` PCRE modifier was removed in PHP 7.0.
	`1822`	`+ *`
`1821`	`1823`	`* @param string $content String to strip slashes from.`
`1822`	`1824`	`* @return string Fixed string with quoted slashes.`
`1823`	`1825`	`*/`
`1824`	`1826`	`function wp_kses_stripslashes( $content ) {`
	`1827`	`+ _deprecated_function( __FUNCTION__, '6.9.0' );`
`1825`	`1828`	`return preg_replace( '%\\\\"%', '"', $content );`
`1826`	`1829`	`}`
`1827`	`1830`