搜索PHP函數讀取數組值

Question

我嘗試創建而不是if條件函數，它讀取數組的所有值和位置，然後調用函數。我檢查文檔，但無法找到解決方案。有沒有我可以在這裏使用的任何PHP函數？

function one() { 
    echo '#btn1 {'; 
     echo 'animation-name:example;'; 
     echo 'animation-duration:1s;'; 
     echo 'animation-delay:0.5s;'; 
    echo '}';  
} 

function two() { 
    echo '#btn2 {'; 
     echo 'animation-name:example;'; 
     echo 'animation-duration:1s;'; 
     echo 'animation-delay:0.5s;'; 
    echo '}';  
} 

$code = 12; 
$arr1 = str_split($code); 

if ($arr1[0] == 1) { 
    one(); 
} 
if ($arr1[0] == 2) { 
    two(); 
} 
if ($arr1[1] == 1) { 
    one(); 
} 
if ($arr1[1] == 2) { 
    two(); 
} 
if ($arr1[2] == 1).... 
// Continues like this for about 36 times 

Answer 1

是這樣的嗎？

function one() { 
    echo '#btn1 {'; 

     echo 'animation-name:example;'; 
     echo 'animation-duration:1s;'; 
     echo 'animation-delay:0.5s;'; 
    echo '}';  
} 
function two() { 
    echo '#btn2 {'; 

     echo 'animation-name:example;'; 
     echo 'animation-duration:1s;'; 
     echo 'animation-delay:0.5s;'; 
    echo '}';  
} 

$code = 12; 
$arr1 = str_split($code); 

foreach ($arr1 as $value) { 
    switch($value) { 
     case 1: 
      one(); 
     break; 
     case 2: 
      two(); 
     break; 
    } 
} 

一切稍作更緊湊

$code = 12; 
$arr1 = str_split($code); 
$css = ''; 
foreach ($arr1 as $value) { 
    $css .= '#btn' . $value . ' {'; 
    $css .= ' animation-name:example;'; 
    $css .= ' animation-duration:1s;'; 
    $css .= ' animation-delay:0.5s;'; 
    $css .= '}'; 
} 

echo $css; // output variable 

Answer 2

這是你在找什麼？

$map = array(1 => 'one', 2 => 'two', 3 => 'tri', 4 => 'four'); 

function one(){ 
    echo 'I am inside function one()'; 
} 

function two(){ 
    echo 'I am inside function two()'; 
} 

function tri(){ 
    echo 'I am inside function tri()'; 
} 

$str = '1324'; 
for($i = 0; $i<strlen($str); $i++){ 
    echo 'Number: ' . $str[$i] . '<br>'; 
    echo 'Function: ' . $map[$str[$i]] . '<br>'; 
    echo 'CALLING IT: '; 
    $map[$str[$i]](); 
    echo '<br> ---------------------------- <br>'; 
} 

注意，如果功能不（在這種情況下four()）存在，它會導致一個錯誤。

輸出：

Number: 1 
Function: one 
CALLING IT: I am inside function one() 
---------------------------- 
Number: 3 
Function: tri 
CALLING IT: I am inside function tri() 
---------------------------- 
Number: 2 
Function: two 
CALLING IT: I am inside function two() 
---------------------------- 
Number: 4 
Function: four 
CALLING IT: E_ERROR : type 1 -- Call to undefined function four() -- at line 21