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有人可以幫助我如何編碼溫度的差異。 例如,在通道1中,差值應爲3。通道二應該是10,通道三應該是2.另外,如果我改變溫度爲負值。我應該如何編碼? HELP如何在php中編寫計算差異的代碼?
<?php
$a1=array(
"channelOne"=>"45",
"channelTwo"=>"100",
"channelThree"=>"20"
);
foreach($a1 as $Name=>$Temperature) {
echo "Channel_Name"."<br>".$Name."<br>"."Actual_Temperature"."<br>".$Temperature."<br>";
}
$a2=array(
"channelOne"=>"48",
"channelTwo"=>"90",
"channelThree"=>"22"
);
foreach($a2 as $Name=>$Temperature_Now) {
echo "Channel_Name"."<br>".$Name."<br>"."Temperature_Now"."<br>".$Temperature_Now."<br>";
}
?>
我假設你有減號鍵計算器。現在有一個想法 –
'foreach($ a1 as $ channel => $ value){$ difference = $ value - $ a2 [$ key]; ...做一些與$差異} –
請參閱http://stackoverflow.com/questions/9118150/php-subtract-array-values –