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php 数组过滤函数 array_map() array_filter()
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Original
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实例
<?php
function test_odd($var)
{
    return($var & 1);
}
 
$a1=array("a","b",2,3,4);
print_r(array_filter($a1,"test_odd"));
?>
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    2018-03-17 17:09:25