Smarty comes with several built-in functions. Built-in functions are integral to the template language. You cannot create custom functions with the same names, nor can you modify built-in functions. &designers.language-builtin-functions.language-function-capture; &designers.language-builtin-functions.language-function-config-load; &designers.language-builtin-functions.language-function-foreach; &designers.language-builtin-functions.language-function-include; &designers.language-builtin-functions.language-function-include-php; &designers.language-builtin-functions.language-function-insert; &designers.language-builtin-functions.language-function-if; &designers.language-builtin-functions.language-function-ldelim; &designers.language-builtin-functions.language-function-literal; &designers.language-builtin-functions.language-function-php; &designers.language-builtin-functions.language-function-section; &designers.language-builtin-functions.language-function-strip;