Title: Is $id a reserved variable?
Last modified: August 19, 2016

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# Is $id a reserved variable?

 *  Resolved [totalnoob](https://wordpress.org/support/users/totalnoob/)
 * (@totalnoob)
 * [18 years, 1 month ago](https://wordpress.org/support/topic/is-id-a-reserved-variable/)
 * Hello,
    I was trying to figure out how a particular plugin works by looking at
   the code. But I am having a hard time with it. The filter plugin declares a global
   called $id and starts using it right way. Is $id an reserved wordpress variable?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Moderator [Samuel Wood (Otto)](https://wordpress.org/support/users/otto42/)
 * (@otto42)
 * WordPress.org Admin
 * [18 years, 1 month ago](https://wordpress.org/support/topic/is-id-a-reserved-variable/#post-733483)
 * The global $id is one of WordPress’s variables that gets set during the Loop,
   yes. It holds the post ID.
 *  Thread Starter [totalnoob](https://wordpress.org/support/users/totalnoob/)
 * (@totalnoob)
 * [18 years, 1 month ago](https://wordpress.org/support/topic/is-id-a-reserved-variable/#post-733485)
 * Thanks.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Is $id a reserved variable?’ is closed to new replies.

 * 2 replies
 * 2 participants
 * Last reply from: [totalnoob](https://wordpress.org/support/users/totalnoob/)
 * Last activity: [18 years, 1 month ago](https://wordpress.org/support/topic/is-id-a-reserved-variable/#post-733485)
 * Status: resolved

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