Though this page claims hash is part of core , you will not have it if you use the "--disable-all" switch in your config. In this case it is necessary to also use "--enable-hash" to access the associated functionality.
A partir de PHP 5.1.2, la extensión Hash está incluida y copilada en PHP de forma predeterminada.
Se puede deshabilitar explícitamente utilizando la opción --disable-hash de la configuración. En versiones anteriores de PHP se puede incorporar la extensión Hash instalando el » módulo PECL.
Though this page claims hash is part of core , you will not have it if you use the "--disable-all" switch in your config. In this case it is necessary to also use "--enable-hash" to access the associated functionality.