Question

我在PHP函数中的新功能是否可以在php函数中使用mysqli_fetch_assoc？

这就是我正在做的事情。

function.php

<?php
        function getinfoid($conn,$idapplicant){

        $sql = "SELECT * FROM applicants WHERE id_mis = '".$idapplicant."' ";
        $result = mysqli_query($conn,$sql);
        while ($row = mysqli_fetch_assoc($result)) {
        $prefix=$row['prefix'];
        $fname1=$row['fname'];
        $mname1=$row['mname'];
        $lname1=$row['lname'];
        $gender=$row['gender'];
        $addr=$row['addr'];
        }
    }
?>

view.php

    <?php 
    require('connection.php'); 
    include ('function.php');
    getinfoid($conn,'2');
    ?>
I'm <?php echo $fname1 ?>

如何回显$ fname1？

Answer 1

您的函数不返回任何内容，这些赋值变量保留在函数范围内。如果总是只有一行要提取，你可以这样做：

function getinfoid($conn,$idapplicant){
    $sql = "SELECT * FROM applicants WHERE id_mis = '".$idapplicant."' ";
    $result = mysqli_query($conn,$sql);
    return mysqli_fetch_assoc($result);
}

然后你可以调用这个函数并回显你的变量：

$row = getinfoid($conn,'2');
?>
I'm <?php echo $row['fname'] ?>

Answer 2

假设您只需打印$fname1，以下是我建议的解决方案：

您需要从函数返回$fname1。

<?php
function getinfoid($conn,$idapplicant){
    $sql = "SELECT * FROM applicants WHERE id_mis = '".$idapplicant."' ";
    $result = mysqli_query($conn,$sql);
    $row = mysqli_fetch_assoc($result);
    return $row['fname'];
} 
require('connection.php'); 
include ('function.php');
$fname1 = getinfoid($conn,'2');
?>
I'm <?php echo $fname1 ?>

或者，您可以像这样从函数返回整行：

function getinfoid($conn,$idapplicant){
    $sql = "SELECT * FROM applicants WHERE id_mis = '".$idapplicant."' ";
    $result = mysqli_query($conn,$sql);
    return mysqli_fetch_assoc($result);
}
require('connection.php'); 
include ('function.php');
$useDetails = getinfoid($conn,'2');
?>
I'm <?php echo $useDetails['fname'] ?>

Answer 3

您可以将变量$ fname1声明为全局并访问该变量。假设只返回单个记录。

function.php

<?php
        $fname1 = "";
        function getinfoid($conn,$idapplicant){
        global $fname1;
        $sql = "SELECT * FROM applicants WHERE id_mis = '".$idapplicant."' ";
        $result = mysqli_query($conn,$sql);
        while ($row = mysqli_fetch_assoc($result)) {
        $prefix=$row['prefix'];
        $fname1=$row['fname'];
        $mname1=$row['mname'];
        $lname1=$row['lname'];
        $gender=$row['gender'];
        $addr=$row['addr'];
        }
    }
?>

view.php

<?php 
require('connection.php'); 
include ('function.php');
getinfoid($conn,'2');
?>
I'm <?php echo $fname1 ?>

Answer 4

<?php
        function getinfoid($conn,$idapplicant){

        $sql = "SELECT * FROM applicants WHERE id_mis = '".$idapplicant."' ";
        $result = mysqli_query($conn,$sql);
        $row = mysqli_fetch_assoc($result); 
        return $row
    }
?>

 <?php 
    require('connection.php'); 
    include ('function.php');
    $data = getinfoid($conn,'2');
    ?>
I'm <?php echo $data['firstname'] ?>

如何在自定义php函数中使用mysqli_fetch_assoc？

4 个答案: