檢查是否在PHP

Question

我正在存儲在數組的生日日期存在數組值

$birthdays = array 
(
    array("Alex",5,12), 
    array("Tom",2,20), 
    array("Sarah",6,12), 
    array("Anna",6,8) 
    array("Jonh",10,7) ); 

我需要的HTML形式（2輸入文本框），我必須輸入日期，按該按鈕，如果日期是存在，將打印誰擁有生日的人的名字今天

Answer 1

你可以嘗試這樣的事情......

$SearchValue = "Sarah" 
foreach ($birthdays as $value) 
{ 
    if (is_array($value)) 
    { 
     if (in_array($SearchValue, $value) 
     { 
      //prints the inner array if the inner array contains your search value 
      print_r($value); 
     } 
    } 
} 

Answer 2

試試這個：

<?php 

$birthdays = array 
(
    array("Alex",5,12), 
    array("Tom",2,20), 
    array("Sarah",6,12), 
    array("Anna",6,8), 
    array("Jonh",10,7) 
); 

function getBirthdayNameByDate($birthdaysArray, $day, $month) 
{ 
    foreach($birthdaysArray as $array) 
    { 
     if($array[1] == $month && $array[2] == $day) 
      return $array[0]; 
    } 

    return null; 

} 

$result = getBirthdayNameByDate($birthdays, 8, 6); 

var_dump($result); 

Answer 3

$birthdays = array (
array("Alex",5,12), 
array("Tom",2,20), 
array("Sarah",6,12), 
array("Anna",6,8), 
array("Jonh",10,7), 
array() 
); 

foreach($birthdays as $birthday) { 
if($birthday) { 
echo $birthday[0]."<br/>"; 
echo $birthday[1]."<br/>"; 
echo $birthday[2]."<br/>"; 
} 
} 

參見如果上述代碼幫助，它只是具有如果condtion中的foreach要檢查陣列並不emptu

Answer 4

使用此功能：

function retrieveBirthdays($birthdays, $month, $day=0) 
{ 
    return array_values 
    (
     array_filter 
     (
      $birthdays, 
      function($row) use($month, $day) 
      { 
       if($day) return ($row[1]==$month && $row[2]==$day); 
       else  return ($row[1]==$month); 
      } 
     ) 
    ); 
} 

print_r(retrieveBirthdays($birthdays, 2, 20)); 

將輸出：

Array 
(
    [0] => Array 
     (
      [0] => Tom 
      [1] => 2 
      [2] => 20 
     ) 

) 

取而代之，要獲取所有六月份的生日，您可以使用：

print_r(retrieveBirthdays($birthdays, 6)); 

，你將獲得：

Array 
(
    [0] => Array 
     (
      [0] => Sarah 
      [1] => 6 
      [2] => 12 
     ) 

    [1] => Array 
     (
      [0] => Anna 
      [1] => 6 
      [2] => 8 
     ) 

) 

---

• 瞭解更多關於array_filter()