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WP_Speculation_Rules::is_valid_id()

WP_Speculation_Rules::is_valid_id( string $id ): bool

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This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

Checks whether the given ID is valid.

Parameters

$idstringrequired
Unique string identifier for the speculation rule.

Return

bool True if the ID is valid, false otherwise.

Source

private function is_valid_id( string $id ): bool {
	return (bool) preg_match( '/^[a-z][a-z0-9_-]+$/', $id );
}

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Used byDescription
WP_Speculation_Rules::add_rule()wp-includes/class-wp-speculation-rules.php

Adds a speculation rule to the speculation rules to consider.

Changelog

VersionDescription
6.8.0Introduced.

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