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<?php
$num1=3.14;
$num2=(int)$num1;
var_dump($num1); //Êä³öfloat(3.14)
var_dump($num2); //Êä³öint(3)
?>
<?php
$num1=3.14;
$num2=(int)$num1;
var_dump($num1); //Êä³öfloat(3.14)
var_dump($num2); //Êä³öint(3)
?>
µÚ¶þÖÖת»»·½Ê½£º intval() floatval() strval()
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<?php
$str="123.9abc";
$int=intval($str); //ת»»ºóÊýÖµ£º123
$float=floatval($str); //ת»»ºóÊýÖµ£º123.9
$str=strval($float); //ת»»ºó×Ö·û´®£º"123.9"
?>
<?php
$str="123.9abc";
$int=intval($str); //ת»»ºóÊýÖµ£º123
$float=floatval($str); //ת»»ºóÊýÖµ£º123.9
$str=strval($float); //ת»»ºó×Ö·û´®£º"123.9"
?>
µÚÈýÖÖת»»·½Ê½£º settype();
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<?php
$num4=12.8;
$flg=settype($num4,"int");
var_dump($flg); //Êä³öbool(true)
var_dump($num4); //Êä³öint(12)
?>
<?php
$num4=12.8;
$flg=settype($num4,"int");
var_dump($flg); //Êä³öbool(true)
var_dump($num4); //Êä³öint(12)
?>
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echo $ip;
} else {
echo "unknown";
}
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{
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}
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$z=&$x;
$condition?$true_item:$false_item;
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