export declare const PHPNextVersion = "next";
export type PHPNextVersion = typeof PHPNextVersion;
export declare const SupportedPHPVersions: readonly ["8.5", "8.4", "8.3", "8.2", "8.1", "8.0", "7.4"];
export declare const LatestSupportedPHPVersion: "8.5";
export declare const SupportedPHPVersionsList: string[];
export type SupportedPHPVersion = (typeof SupportedPHPVersions)[number];
export declare const LegacyPHPVersions: readonly ["5.2"];
export type LegacyPHPVersion = (typeof LegacyPHPVersions)[number];
/**
 * Type guard for the PHP next build pseudo-version.
 */
export declare function isPHPNextVersion(version: string | undefined): version is PHPNextVersion;
/**
 * Type guard for legacy PHP versions. Lets callers narrow a string
 * to `LegacyPHPVersion` without the `as readonly string[]` cast that
 * would otherwise be required to satisfy `Array.prototype.includes`.
 */
export declare function isLegacyPHPVersion(version: string | undefined): version is LegacyPHPVersion;
export declare const AllPHPVersions: readonly ["next", "8.5", "8.4", "8.3", "8.2", "8.1", "8.0", "7.4", "5.2"];
export type AllPHPVersion = PHPNextVersion | SupportedPHPVersion | LegacyPHPVersion;