一路很纠结的php面试题
一道很纠结的php面试题
$a = 1;
$b = 'a';
$a = $b++;
//$a = 'a'
//$b = 'b'
$b = $a++;
//$b = 'a'
//$a = 'b'
$c = set($a).$b;
//$c = 3.'a'
//$c = 3a
echo $c;
function set($a=2,$b=3){
global $a;
//$a = 'b'
$c = &$a;
$a += $b++;
//$a = 'b' + 3
//$a = 3
//$c = 3
return $c;
}
1 楼
ly365
2011-05-01
很考验基础知识是否扎实
/phprm/29241.htmlwww.phpzy.comtrue/phprm/29241.htmlTechArticle一路很纠结的php面试题 一道很纠结的php面试题 $a = 1;$b = 'a';$a = $b++; //$a = 'a' //$b = 'b'$b = $a++; //$b = 'a'//$a = 'b'$c = set($a).$b;//$c = 3.'a'//$c = 3aecho $c;function set($a=2,$b=3){global $a; //$a = 'b' $c = $a...
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