求各位帮忙看看这道php的题。用php写个代码。求具体代码
第一题:
$sum = 0;
for ($i = 0; $i < count($a); $i++) {
$sum += $a[$i];
}
$sum = 0;
foreach ($a as $v) {
$sum += $v;
}
第二题:
$mysqli = new mysqli("localhost", "root", "root", "DB_Person");
$rs = $mysqli->query("select * from tbl_Person where UserName='张三丰' or Phone='13812344321'");
while ($row = $rs->fetch_assoc()) {
var_dump($row);
}
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