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[英]How can I add a $key=>$value pair to an associative array using a foreach loop in PHP?
[英]PHP Associative array. Get key value pair using foreach
我正在嘗試定義一個函數,給定一個關聯數組,該函數將回顯鍵值對,並給出該函數的參數。
到目前為止,我有下面顯示的代碼。 但是,該代碼的結果將是鍵值對的完整列表(表)。 我想要得到的只是一對(一旦調用了函數)。
有人可以幫我嗎?
謝謝!
enter code here
<!DOCTYPE html>
<html>
<head>
<body>
<h1>List of States</h1>
<?php
$states = array ("AL"=>"Alabama","AK"=>"Alaska","AZ"=>"Arizona","AR"=>"Arkansas","CA"=>"California","CO"=>"Colorado","CT"=>"Connecticut",
"DE"=>"Delaware","FL"=>"Florida","GA"=>"Georgia","HI"=>"Hawaii","ID"=>"Idaho","IL"=>"Illinois","IN"=>"Indiana","IA"=>"Iowa","KS"=>"Kansas",
"KY"=>"Kentucky");
function printState($Abbr) {
global $states;
echo "<table border=1>";
foreach($states as $Abbr => $value) {
echo "<tr>";
echo "<td>";
echo $Abbr;
echo "</td>";
echo "<td>";
echo $value;
echo "</td>";
echo "</tr>";
}
echo "</table>";
}
printState("CA");
?>
</body>
</html>
如果必須具有功能:
function getState($code) {
global $states;
if (array_key_exists($code, $states)) {
return $states[$code];
}
return false;
}
echo getState('GA');
但是正如Dave Chen所建議的那樣, $states[$abbr];
是你會怎么做的。
嗨,你也可以使用這個
function printState($Abbr) {
global $states;
if (array_key_exists($Abbr,$states)){
return "<table border=1><tr><td>$Abbr</td><td>$states[$Abbr]</td></tr></table>";
}
}
echo printState("AK");
?>
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