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/*常用數(shù)組函數(shù)*/ //count函數(shù) 統(tǒng)計(jì)數(shù)組的元素個(gè)數(shù) $arr1 = array(array(1,2,3),array(4,5,6));...
//將字符串分割 返回一個(gè)數(shù)組 定義字符串$str $str = "apple,pear,banana,orange"; //用逗號(hào)對(duì)$str字...