Script Loader dies in 3.3 on no-JSON PHP

[mitchoyoshitaka]

As of r18464, the script loader uses json_encode, but for those machines which for some bizarre reason don't build JSON support into PHP (cf #18015), a load-scripts.php request will die.

This happened to me on the released 3.3.

Note: it's possible that there are other corners of the code where JSON has been added since 3.3 and compat.php isn't included, but I just haven't stumbled into them yet. It would be worth doing a sweep.

Patch for hotfix. By defining SCRIPT_DEBUG, load-scripts.php is bypassed. Untested.

Index: hotfix.php
===================================================================
--- hotfix.php	(revision 474276)
+++ hotfix.php	(working copy)
@@ -34,6 +34,9 @@
 	$hotfixes = array();
 
 	switch ( $wp_version ) {
+		case '3.3' :
+			define( 'SCRIPT_DEBUG', true );
+			break;
 		case '3.1.3' :
 			$hotfixes = array( '313_post_status_query_string' );
 			break;

Replying to nacin:

Patch for hotfix. By defining SCRIPT_DEBUG, load-scripts.php is bypassed. Untested.

Tested. Works.

Patch for 3.3.1.

Replying to nacin:

Patch for 3.3.1.

Tested. Works.

Updated with proposed (untested) fix for #19510

FYI, that means "Please install ​http://wordpress.org/extend/plugins/hotfix/ if you have this problem, until 3.3.1 comes out." ;)

In [19597]:

Define json_encode() in load-scripts.php. see #19524 for trunk.

After 3.2's JSON snafu, we asked the kind folks at VaultPress to provide some stats on how many installs really don't have JSON compiled. It ended up being a staggering 3.64%, and forced our hand on 3.2.1.

As of yesterday, the number now is 1.25%.

However, we realized today that the number includes PHP4 installs. So the vast majority of these percentages actually include PHP4 on WP 3.1.x. Just two VaultPress sites are PHP 5.2 but missing json. Both appear custom-compiled, so there's no host for us to contact.

That doesn't make this fix any less invalid, but given Hotfix, it should make us feel better about waiting for a 3.3.1.

In [19637]:

Define json_encode() in load-scripts.php. fixes #19524 for 3.3.