通過與foreach語句陣列

Question

我有陣列的列表，並需要他們輸出與printf語句

<?php 
$example = array("first" => "Bob", "last" => "Smith", "address" => "123 Spruce st"); 
$example = array("first" => "Sara", "last" => "Blask", "address" => "5678 Maple ct"); 

foreach ($example as $key => $val) { 
    printf("<p>hello my name is %s %s and i live at %s</p>",$example['first'],$example['last'], $example['address']); 
} 

?> 

上面剛剛過去的陣列輸出循環，我就需要遍歷所有的陣列和用提供的key => value組合產生<p>。這僅僅是作爲現實世界中的代碼將在輸出html

更復雜的我試過

foreach ($example as $arr){ 
printf("<p>hello my name is %s %s and i live at %s</p>",$arr['first'],$arr['last'], $arr['address']); 
} 

一個簡單的例子，但它只能輸出每個key => value

Answer 1

單個字符嘗試是這樣的：

// Declare $example as an array, and add arrays to it 
$example = array(); 
$example[] = array("first" => "Bob", "last" => "Smith", "address" => "123 Spruce st"); 
$example[] = array("first" => "Sara", "last" => "Blask", "address" => "5678 Maple ct"); 

// Loop over each sub-array 
foreach($example as $val) { 
    // Access elements via $val 
    printf("<p>hello my name is %s %s and i live at %s</p>",$val['first'],$val['last'], $val['address']); 
} 

您可以從this demo看到它打印：

hello my name is Bob Smith and i live at 123 Spruce st 
hello my name is Sara Blask and i live at 5678 Maple ct 

Answer 2

您需要將示例聲明爲數組以便獲取2維數組，然後將其附加到它。

$example = array(); 
$example[] = array("first" => "Bob", "last" => "Smith", "address" => "123 Spruce st"); # appends to array $example 
$example[] = array("first" => "Sara", "last" => "Blask", "address" => "5678 Maple ct"); 

Answer 3

你覆蓋在兩條線上$example。你需要一個多維「數組的數組：」

$examples = array(); 
$examples[] = array("first" ... 
$examples[] = array("first" ... 

foreach ($examples as $example) { 
    foreach ($example as $key => $value) { ... 

當然，你也可以做printf立即而不是分配陣列。

Answer 4

你必須通過主陣列，使您的陣列和循環數組：

<?php 

$examples[] = array("first" => "Bob", "last" => "Smith", "address" => "123 Spruce st"); 
$examples[] = array("first" => "Sara", "last" => "Blask", "address" => "5678 Maple ct"); 

foreach ($examples as $example) { 
    printf("<p>hello my name is %s %s and i live at %s</p>",$example['first'],$example['last'], $example['address']); 
} 

?>