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怎样对数组进行插入操作，然后后面的数组按顺序往后移？
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- 2016-06-06 20:40:321556browse
array("a","b","c","d")
怎样在b,c的中间插入一个值，并且c，d对应的键值自加1；
回复内容：
array("a","b","c","d")
怎样在b,c的中间插入一个值，并且c，d对应的键值自加1；
<code><?php // http://3v4l.org/KWaTf
$arr = array("a","b","c","d");
array_splice($arr, 2, 0, "1");
print_r($arr);
</code></code>
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