2'); // 1
echo PinaCode::math_and_logic("foo == bar"); // 0
echo PinaCode::math_and_logic("foo == foo"); // 1
*/
namespace admin_form;
$pina_bracket_array = []; // l'elenco dei gruppi tra parentesi tonde
/**
* Ritorna true se ci sono ancora parentesi tonde da elaborare all'interno della stringa passata.
* @param String $string
* @return Boolean
*/
function pina_has_brackets($string) {
global $pina_bracket_array;
if (count ($pina_bracket_array) > 0) {
return true;
}
$bracket_array = [];
preg_match_all("|\([^\(\)]*\)|U", $string, $brackets , PREG_PATTERN_ORDER);
if (is_array($brackets) && count($brackets) > 0) {
foreach ($brackets as $bracket) {
if (isset($bracket[0]) ) {
$pina_bracket_array[] = $bracket[0];
}
}
}
return (count ($pina_bracket_array) > 0) ? true : false;
}
/**
* Esegue una singola parte della stringa tra parentesi tonde
* @param String $string
* @return String
*/
function pina_execute_brackets($string) {
global $pina_bracket_array;
if (count ($pina_bracket_array) > 0) {
$bracket = array_shift($pina_bracket_array);
$ris = pina_calculator(str_replace(["(",")"],"", $bracket));
$string = str_replace($bracket, $ris, $string);
}
return $string;
}
/**
* Esegue una stringa con gli operatori logici
* @param String $left
* @return String $right
* @return String $operator
*
*/
function pina_logical_operation ($left, $right, $operator) {
if (is_string($left) && is_string($right)) {
$string = $left.$operator.$right;
} else {
$string = 0;
}
switch ($operator) {
case "+":
if (is_numeric($left) && is_numeric($right) ) {
$string = $left + $right;
} else if ( is_numeric($right) ) {
$string = $right;
} else {
$string = 0;
}
break;
case "-":
if (is_numeric($left) && is_numeric($right) ) {
$string = $left - $right;
} else if ( is_numeric($right) ) {
$string = - $right;
} else {
$string = 0;
}
break;
case "*":
if (is_numeric($left) && is_numeric($right) ) {
$string = $left * $right;
} else {
$string = 0;
}
break;
case "/":
if ((is_numeric($left) && $left > 0 ) && (is_numeric($right) && $right > 0 )) {
$string = $left / $right;
} else {
$string = 0;
}
break;
case "^":
if (is_numeric($left) && is_numeric($right) ) {
$string =pow($left, $right);
} else {
$string = 0;
}
break;
case "%":
if (is_numeric($left) && is_numeric($right) ) {
$string = $left % $right;
} else {
$string = 0;
}
break;
case "==":
//print "-- ".$left. "==".$right."
";
if (is_string($left) && is_string($right)) {
$string = (strtolower(trim($left)) == strtolower(trim($right))) ? 1 : 0;
} else if ((is_null($left) || empty($left) || $left == "" ) && (is_null($right) || empty($right) || $right == "")) {
$string = 1;
} else {
$string = ($left == $right) ? 1 : 0;
}
break;
case "<>":
case "!=":
$string = ($left != $right) ? 1 : 0;
break;
case "<=":
$string = ($left <= $right) ? 1 : 0;
break;
case "<":
$string = ($left <$right) ? 1 : 0;
break;
case ">":
$string = ($left >$right) ? 1 : 0;
break;
case ">=":
$string = ($left >= $right) ? 1 : 0;
break;
case " in ":
if (is_array($right) || is_object($right)) {
$string = (in_array($left, (array)$right)) ? 1 : 0;
} else if (is_string($right)) {
$string = (stripos($right , $left)) ? 1 : 0;
} else {
$string = 0;
}
break;
case " not in ":
if (is_array($right) || is_object($right)) {
$string = (!in_array($left, (array)$right)) ? 1 : 0;
} else if (is_string($right)) {
$string = (stripos($right , $left) === false) ? 1 : 0;
} else {
$string = 0;
}
break;
case "&&":
case "and":
$string = ($left and $right) ? 1 : 0;
break;
case "||":
case "or":
$string = ($left or $right) ? 1 : 0;
break;
case "!":
$string = !$right;
break;
}
return $string;
}
/**
* Divide una stringa per gli operatori e li esegue
* @param String $string
*/
function pina_calculator($string) {
$op = array( "and","or", "&&", "||","==","!=",">=","<=","<>"," not in "," in ", ">", "<", "!", "+", "-", "*", "/", "^", "%");
//print "pina_logical_operation: ".$string."
";
$string = trim($string);
// escludo eventuali testi con virgolette
$um = new GpUtilitiesMarks();
$string = $um->replace($string);
foreach ($op as $o) {
$find = stripos($string, $o);
if ($find !== false && substr($string, $find-1,1) != "[") {
$left = $um->restore(trim(substr($string, 0, $find)));
$right = $um->restore(trim(substr($string, $find+strlen($o))));
//print "".$left." |||| ".$right."
";
$left = pina_remove_quotes(pina_calculator($left));
$right = pina_remove_quotes(pina_calculator($right));
$string = pina_logical_operation($left, $right, $o);
//print "".$left." ".$o." ".$right." = ".$string."
";
}
}
$string = $um->restore($string);
return $string;
}