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                [TOC] ## 涉及函數 array_count_values();//統計統計數組中所有值出現的次數 array_product(); //計算數組中所有值的乘積 array_sum(); //返回數組中值的和 count(); //返回數組中元素的數目 ## 實例 ~~~ <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>獲取數組信息</title> </head> <body> <?php $arr = array('php', 'mysql', 'html', 'php', 'html', 'php'); echo '1 統計數組中所有值出現的次數<br />'; print_r(array_count_values($arr)); echo '<br />'; $arr1 = array_count_values($arr); echo 'php出現的次數為:'; echo $arr1['php']; echo '<br />'; echo '<br />'; $a = array(1, 2, 3, 4, 5); echo '2 計算數組中所有值的乘積:'; echo array_product($a); echo '<br />'; echo '<br />'; echo '3 返回數組中值的和:'; echo array_sum($a); echo '<br />'; echo '<br />'; echo '4 返回數組總元素的數目:'; echo count($a); echo '<br />'; echo '<br />'; ?> </body> </html> ~~~
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