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foreach 使用”引用”遍历数组时的问题

$testarr = array(‘a’,’b’,’c’); foreach( $testarr as $k=>&$v ) { echo $k.”=>”.$v.”
“; } echo “——-
“; foreach( $testarr as $k=>$v ) { echo $k.”=>”.$v.”
“; }

你可能以为结果为

0=>a 1=>b 2=>c ——- 0=>a 1=>b 2=>c

实际输出是

0=>a 1=>b 2=>c ——- 0=>a 1=>b 2=>b

这是什么道理?

Posted in PHP, 技术.

Tagged with , , .

rev="post-1129" 1 comment

By C1G – 2010/10/20

One Response

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  1. David Lou says

    嗯，看起来好像就是个bug，参见http://bugs.php.net/bug.php?id=29992

    2010/10/20, 20:53



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