php处理数组相关
$entry = array(
0 => 'foo',
1 => false,
2 => -1,
3 => null,
4 => '',
5 => 0,
);
var_dump(array_filter($entry));//去除项为空或false、null、0的项
$strDelCodes = "A,B,,C,,C,D,,,D,D";
$strDelCodes = explode(",", $strDelCodes);//字符串切割成数组
var_dump($strDelCodes);
$strDelCodes = array_diff($strDelCodes, array(""));//求差集，过滤了共同的值为空的数组项，保留键的名称和顺序
var_dump($strDelCodes);
$strDelCodes = array_unique($strDelCodes);//过滤值相同的数组，但是保留原来的键值对顺序
var_dump($strDelCodes);
$strDelCodes = array_values($strDelCodes);//重新排序键的顺序，如：0 => 'A'，1 => 'B'，
var_dump($strDelCodes);G
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