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8.1.8
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203.81 GB
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171.9.3.2
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171.9.3.1
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Template Functions {#plugins.functions} ================== void smarty\_function\_ name array \$params object \$template All [attributes](#language.syntax.attributes) passed to template functions from the template are contained in the `$params` as an associative array. The output (return value) of the function will be substituted in place of the function tag in the template, eg the [`{fetch}`](#language.function.fetch) function. Alternatively, the function can simply perform some other task without any output, eg the [`{assign}`](#language.function.assign) function. If the function needs to assign some variables to the template or use some other Smarty-provided functionality, it can use the supplied `$template` object to do so eg `$template->foo()`. <?php /* * Smarty plugin * ------------------------------------------------------------- * File: function.eightball.php * Type: function * Name: eightball * Purpose: outputs a random magic answer * ------------------------------------------------------------- */ function smarty_function_eightball($params, Smarty_Internal_Template $template) { $answers = array('Yes', 'No', 'No way', 'Outlook not so good', 'Ask again soon', 'Maybe in your reality'); $result = array_rand($answers); return $answers[$result]; } ?> which can be used in the template as: Question: Will we ever have time travel? Answer: {eightball}. <?php /* * Smarty plugin * ------------------------------------------------------------- * File: function.assign.php * Type: function * Name: assign * Purpose: assign a value to a template variable * ------------------------------------------------------------- */ function smarty_function_assign($params, Smarty_Internal_Template $template) { if (empty($params['var'])) { trigger_error("assign: missing 'var' parameter"); return; } if (!in_array('value', array_keys($params))) { trigger_error("assign: missing 'value' parameter"); return; } $template->assign($params['var'], $params['value']); } ?> See also: [`registerPlugin()`](#api.register.plugin), [`unregisterPlugin()`](#api.unregister.plugin).