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In PHP 5.0.0, is_a() became deprecated in favour of the instanceof operator. Calling is_a() would result in an E_STRICT warning.

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In PHP 5.3.0, `is_a()` is no longer deprecated, and will therefore no longer throw `E_STRICT` warnings.

To avoid warnings in PHP < 5.3.0, convert all `is_a()` calls to `$var instanceof WP_Class` calls.

`instanceof` does not throw any error if the variable being tested is not an object, it simply returns `false`.

Props markoheijnen, wonderboymusic.
Fixes #25672.


git-svn-id: https://develop.svn.wordpress.org/trunk@31188 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Scott Taylor
2015-01-16 01:05:52 +00:00
parent 102fb4ac5c
commit 5acc6bdb58
24 changed files with 76 additions and 68 deletions
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6
src/wp-includes/class-wp-error.php
View File

@@ -214,8 +214,6 @@ class WP_Error {
* @param mixed $thing Check if unknown variable is a WP_Error object.
* @return bool True, if WP_Error. False, if not WP_Error.
*/
function is_wp_error($thing) {
if ( is_object($thing) && is_a($thing, 'WP_Error') )
return true;
return false;
function is_wp_error( $thing ) {
return ( $thing instanceof WP_Error );
}