wp_enqueue_script prints current WordPress version not script version

[rfair404]

When using wp_enqueue_script and wp_register_script the resulting html output in the header looks like this.

<script type="text/javascript" src="http://192.168.1.133/wp-content/themes/pnap/lib/flash/player-files/jwplayer.js?ver=3.2-bleeding"></script>

Notice that the version is 3.2-bleeding which is the the script version, but the wordpress version.

here is the register and enqueue scripts...

add_action('init', 'pnap_flash_register_swfobject');
function pnap_flash_register_swfobject() {
wp_register_script('jwplayer', PNAP_FLA_URL.'/player-files/jwplayer.js');
}
add_action('wp_print_scripts', 'pnap_flash_enqueue_swfobject');
function pnap_flash_enqueue_swfobject() {
wp_enqueue_script('jwplayer');
}

The good news is that this does not seem to cause any problems at the time being.

[rfair404]

As a follow up, I know that I am not including a version number when registering the script, but that is displayed as an optional argument on codex, so theoretically shouldn't leaving it blank just not show a version number at all?

[dd32]

This is the expected behaviour.

You can pass a NULL parameter in as the version to prevent any version number being printed. See the ​documentation for this.

[hakre]

Replying to dd32:

This is the expected behaviour.

You can pass a NULL parameter in as the version to prevent any version number being printed. See the ​documentation for this.

Passing NULL to optional parameters in PHP can trigger the default value (might vary accross PHP versions), which is FALSE here. So do you wanted to say that passing FALSE prevent any version number being printed?

[scribu]

So do you wanted to say that passing FALSE prevent any version number being printed?

No, he meant NULL. FALSE means the WP version is used (akward, yes).

Passing NULL to optional parameters in PHP can trigger the default value

Do you have a reference for that statement?

[scribu]

Also, please don't reopen tickets without a clear rationale for doing so.

[scribu]

In other words, you don't need to re-open a ticket just to ask for clarifications.

[hakre]

Replying to scribu:

So do you wanted to say that passing FALSE prevent any version number being printed?

No, he meant NULL. FALSE means the WP version is used (akward, yes).

Thanks for clarification.

Passing NULL to optional parameters in PHP can trigger the default value

Do you have a reference for that statement?

I'm not able to verify that in a timely manner, no. I knew that some PHP internal functions do so, but for user-code this does not seem to be the case for the PHP configurations I was able to test against.