Question

我无法将新值插入数组。插入元素时，值会发生变化，但不会增加键值。

如果值不在数组中，我想将新值插入数组。

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Add Cart</title>
</head>
<body>
<div class="container">
<form method="post" action="">
<input type="text" name="salary">
<input type="submit" name="submit" value="submit">
</form>
<?php
if(isset($_POST['salary']))
{
 $salary = array();
 $values = $_POST['salary'];
 if(!in_array($values, $salary))
{
    array_push($salary, $values);
}
print_r($salary);

}
?>
</div>
</body>
</html>

Answer 1

这是一个工作示例，说明如何使用$ _SESSION执行您要执行的操作。

<?php
session_start();

if(isset($_POST['salary'])) {
    // if you don't check if it exists first
    // you will be wiping it every time you post new values
    if(!isset($_SESSION['salary'])) {
        $_SESSION['salary'] = array();
    }
    $values = $_POST['salary'];
    if(!in_array($values, $_SESSION['salary'])) {
        array_push($_SESSION['salary'], $values);
    }
    // not required but suggested
    session_write_close();
}
?>
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <title>Add Cart</title>
</head>
<body>
<div class="container">
    <form method="post" action="">
        <input type="text" name="salary">
        <input type="submit" name="submit" value="submit">
    </form>
    <h3>Current values stored in salary array</h3>
    <?php echo (isset($_SESSION['salary'])) ? json_encode($_SESSION['salary']) : '[]' ?>
</div>
</body>
</html>

使用php将值推送到数组中

1 个答案: