無法解析（然後循環）具有多個值的變量，以逗號分隔

Question

我擁有公司數據庫，每個數據庫只能發送到特定數量的州。我用一種發送到所有狀態的MySQL字段的表單來管理它們（用逗號分隔每個狀態）。

我無法解析字符串，這樣它會檢查與狀態歸屬在頁面加載時

$check ="NY,CA,FL"; 

function state_list($check) { 
$arr = array('AL'=>"Alabama",'AK'=>"Alaska",'AZ'=>"Arizona",'AR'=>"Arkansas",'CA'=>"California",'CO'=>"Colorado",'CT'=>"Connecticut",'DE'=>"Delaware",'DC'=>"DC",'FL'=>"Florida",'GA'=>"Georgia",'HI'=>"Hawaii",'ID'=>"Idaho",'IL'=>"Illinois", 'IN'=>"Indiana", 'IA'=>"Iowa", 'KS'=>"Kansas",'KY'=>"Kentucky",'LA'=>"Louisiana",'ME'=>"Maine",'MD'=>"Maryland", 'MA'=>"Massachusetts",'MI'=>"Michigan",'MN'=>"Minnesota",'MS'=>"Mississippi",'MO'=>"Missouri",'MT'=>"Montana",'NE'=>"Nebraska",'NV'=>"Nevada",'NH'=>"New Hampshire",'NJ'=>"New Jersey",'NM'=>"New Mexico",'NY'=>"New York",'NC'=>"North Carolina",'ND'=>"North Dakota",'OH'=>"Ohio",'OK'=>"Oklahoma", 'OR'=>"Oregon",'PA'=>"Pennsylvania",'PR'=>"Puerto Rico ",'RI'=>"Rhode Island",'SC'=>"South Carolina",'SD'=>"South Dakota",'TN'=>"Tennessee",'TX'=>"Texas",'UT'=>"Utah",'VT'=>"Vermont",'VA'=>"Virginia",'WA'=>"Washington",'WV'=>"West Virginia",'WI'=>"Wisconsin",'WY'=>"Wyoming"); 
foreach($arr as $k => $v){ 
    $checked = ($check == $k) ? ' checked="yes"' : ''; 
    echo '<li><input class="checkStates" name="states" type="checkbox" value="'.$k.'"'.$checked.'>'.$v.'</li>'; 
} 
} 

Answer 1

如果$check是逗號分隔即可爆炸字符串並將其轉換爲數組，然後在for循環中，只需檢查狀態是否在數組中。

$check ="NY,CA,FL"; 
$arr = array('AL'=>"Alabama",'AK'=>"Alaska",'AZ'=>"Arizona",'AR'=>"Arkansas",'CA'=>"California",'CO'=>"Colorado",'CT'=>"Connecticut",'DE'=>"Delaware",'DC'=>"DC",'FL'=>"Florida",'GA'=>"Georgia",'HI'=>"Hawaii",'ID'=>"Idaho",'IL'=>"Illinois", 'IN'=>"Indiana", 'IA'=>"Iowa", 'KS'=>"Kansas",'KY'=>"Kentucky",'LA'=>"Louisiana",'ME'=>"Maine",'MD'=>"Maryland", 'MA'=>"Massachusetts",'MI'=>"Michigan",'MN'=>"Minnesota",'MS'=>"Mississippi",'MO'=>"Missouri",'MT'=>"Montana",'NE'=>"Nebraska",'NV'=>"Nevada",'NH'=>"New Hampshire",'NJ'=>"New Jersey",'NM'=>"New Mexico",'NY'=>"New York",'NC'=>"North Carolina",'ND'=>"North Dakota",'OH'=>"Ohio",'OK'=>"Oklahoma", 'OR'=>"Oregon",'PA'=>"Pennsylvania",'PR'=>"Puerto Rico ",'RI'=>"Rhode Island",'SC'=>"South Carolina",'SD'=>"South Dakota",'TN'=>"Tennessee",'TX'=>"Texas",'UT'=>"Utah",'VT'=>"Vermont",'VA'=>"Virginia",'WA'=>"Washington",'WV'=>"West Virginia",'WI'=>"Wisconsin",'WY'=>"Wyoming"); 

$states = explode(',', $check); 

foreach($arr as $k => $v){ 
    $checked = in_array($k, $states) ? ' checked="yes"' : ''; 
    echo '<li><input class="checkStates" name="states" type="checkbox" value="'.$k.'"'.$checked.'>'.$v.'</li>'; 
} 

Answer 2

我想它是與你的比較箱子。請確保$check是大寫字母。而如果通過，那麼它必須有一些與$check的價值傳遞做

編輯：什麼，你需要做的是...

$ary = explode(",", $check); 

foreach($arr as $k => $v) { 
    $checked = (in_array($k, $ary)) ? ' checked="yes"' : ''; 
    echo '<li><input class="checkStates" name="states" type="checkbox" value="'.$k.'"'.$checked.'>'.$v.'</li>'; 
}