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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
3597 |
|
3598 | /** |
3599 | * Fires when a deprecated constructor is called. |
3600 | * |
3601 | * @since 4.3.0 |
3602 | * |
3603 | * @param string $class The class containing the deprecated constructor. |
3604 | * @param string $version The version of WordPress that deprecated the function. |
3605 | */ |
3606 | do_action( 'deprecated_constructor_run', $class, $version ); |
3607 |
|
3608 | /** |
3609 | * Filter whether to trigger an error for deprecated functions. |
3610 | * |
3611 | * `WP_DEBUG` must be true in addition to the filter evaluating to true. |
3612 | * |
3613 | * @since 4.3.0 |
3614 | * |
3615 | * @param bool $trigger Whether to trigger the error for deprecated functions. Default true. |