Is there an atomic way to update_option in WordPress (to ensure data integrity)?

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I want to update an option which is an array by adding a new value, but there’s no atomicity or guarantee of data integrity.

EXAMPLE

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//Get the option value (an array)
$val = get_option( "some-option" );

//Add to the array
$val[] = "something";

/** Here, another session might already have it and is calling "update_option" */

//Save back (this overwrites whatever that other person did)
update_option( "some-option", $val );

Is there anything in wordpress that offers atomicity?

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1 comment

  1. My first thought was to add a second option that acts as a data lock.

    You’d perform a check to see if the lock came back false before being allowed to modify the option.

    After giving it some more thought however wouldn’t a custom table better suit your needs. If you have multiple people updating the same option a table makes more sense.

    Anyway, here’s how the lock could work:

    if ( false === get_option( 'some-option-lock' ) )  {
    update_option( 'some-option-lock', true );

    $val = get_option( "some-option" );

    //Add to the array
    $val[] = "something";

    update_option( "some-option", $val );

    update_option( 'some-option-lock', false );
}