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Documentación GVHIDRA 3.1.5
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Ir al código fuente de este archivo.
Namespaces | |
namespace | Smarty |
Funciones | |
smarty_function_math ($params, &$smarty) |
smarty_function_math | ( | $ | params, |
&$ | smarty | ||
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Smarty {math} function plugin
Type: function
Name: math
Purpose: handle math computations in template
{math} (Smarty online manual) Monte Ohrt
array | |
Smarty |
Definición en la línea 22 del archivo function.math.php.
{ // be sure equation parameter is present if (empty($params['equation'])) { $smarty->trigger_error("math: missing equation parameter"); return; } $equation = $params['equation']; // make sure parenthesis are balanced if (substr_count($equation,"(") != substr_count($equation,")")) { $smarty->trigger_error("math: unbalanced parenthesis"); return; } // match all vars in equation, make sure all are passed preg_match_all("!(?:0x[a-fA-F0-9]+)|([a-zA-Z][a-zA-Z0-9_]+)!",$equation, $match); $allowed_funcs = array('int','abs','ceil','cos','exp','floor','log','log10', 'max','min','pi','pow','rand','round','sin','sqrt','srand','tan'); foreach($match[1] as $curr_var) { if ($curr_var && !in_array($curr_var, array_keys($params)) && !in_array($curr_var, $allowed_funcs)) { $smarty->trigger_error("math: function call $curr_var not allowed"); return; } } foreach($params as $key => $val) { if ($key != "equation" && $key != "format" && $key != "assign") { // make sure value is not empty if (strlen($val)==0) { $smarty->trigger_error("math: parameter $key is empty"); return; } if (!is_numeric($val)) { $smarty->trigger_error("math: parameter $key: is not numeric"); return; } $equation = preg_replace("/\b$key\b/", " \$params['$key'] ", $equation); } } eval("\$smarty_math_result = ".$equation.";"); if (empty($params['format'])) { if (empty($params['assign'])) { return $smarty_math_result; } else { $smarty->assign($params['assign'],$smarty_math_result); } } else { if (empty($params['assign'])){ printf($params['format'],$smarty_math_result); } else { $smarty->assign($params['assign'],sprintf($params['format'],$smarty_math_result)); } } }