計數的變量有多少次出現在一個陣列

Question

我指望的東西有多少次出現在存儲在會話的數組：

session_start(); 

//product IDNO 
$product_idno = isset($_POST['product_idno']) ? $_POST['product_idno'] : ""; 
// Product Qauntity 
$product_qauntity = isset($_POST['product_qauntity']) ? $_POST['product_qauntity'] : ""; 
// Product Supplier 
$product_supplier = isset($_POST['product_supplier']) ? $_POST['product_supplier'] : ""; 


$session_array = $_SESSION['portal_quote'][$product_idno] 
    = array(
     'product_qauntity' => $product_qauntity, 
     'product_supplier' => $product_supplier 
    ); 

我怎麼能算一個供應商有多少次出現在數組中？

Answer 1

您的意思是在該結構中出現指定文字的$_SESSION['portal_quote'][i]['product_supplier']多少次？

你可以把存儲在$_SESSION像PHP任何其他陣列數組，因此如：

$supplier= "Bob"; //the supplier you are looking for 
$occurences = 0; 

$arr = $_SESSION['portal_quote']; 
foreach($arr as $record){ 
    if($record['product_supplier'] == $supplier){ 
     $occurences++; 
    } 
} 

echo "Supplier ".$supplier." occured ".$occurences." times.";