Foreach不在类方法中工作

Question

我倾向于PHP5类，比如我是新加入的。但是我尝试使用foreach循环在Class Methods中获取人的性别，但是它只显示第一个人的权利，而不是显示第二个人的权利，第三个人，等等。

这是我的代码：

class Person{
    // atteributes or property of class
    var $first_name;
    var $last_name;
    var $legs = 2;
    var $hand = 2;
    var $gender;
    function say_hello(){
        echo "Hello inside the class from " . get_class($this) . "<br />";
    }
    // full name function
    function full_name(){
        echo $this->first_name ." ". $this->last_name;
    }
    // Gender
    function gender(){
        $names = array("Hamza","Ali","Ibrar","Muqeet","Hassan","Umer","Shaveer");
        foreach($names as $name){
            if($this->first_name == $name){
                echo $this->gender = "Male";
                break;
            }else{
                echo $this->gender = "Female";
                break;
            }
        }
    }
}

$person = new Person();
$person->first_name = "Hamza";
$person->last_name = "Nisar";
$person->full_name();
echo "<br />";
$person->gender();
echo "<br />";
/*---------------------*/
$person2 = new Person();
$person2->first_name = "Ibrar";
$person2->last_name = "Ahmed";
$person2->full_name();
echo "<br />";
$person2->gender();
echo "<br />";

这就是结果：

Hamza Nisar
Male
Ibrar Ahmed
Female

它必须显示男性也为第二个人

Answer 1

这些答案都没有告诉为什么您的代码不能工作。当first_name =“易卜拉欣”时，让我们遵循foreach的逻辑：

$names = array("Hamza","Ali","Ibrar","Muqeet","Hassan","Umer","Shaveer");
foreach($names as $name){
    if($this->first_name == $name){
        echo $this->gender = "Male";
        break;
    }else{
        echo $this->gender = "Female";
        break;
    }
}

Loop1: IF语句是错误的，如"Ibrar“!== "Hamza”。因此，使用的是其他的，它打印女性和打破。

其他的答案是好的解决办法。但是，假设您仍然希望使用foreach循环。你可以这样做：

$this->gender = 'Female';
$names = array("Hamza","Ali","Ibrar","Muqeet","Hassan","Umer","Shaveer");
foreach($names as $name){
    if ($this->first_name === $name) {
        $this-gender = 'Male';
        break;
    }
}

echo $this->gender;

Answer 2

使用foreach循环并检查每一种可能性似乎是实现这一目标的一种奇怪的方法。我建议将foreach函数替换为in_array函数，当在if语句中使用该函数时，可以使用更少的代码来完成相同的任务。

示例：

<?php 

class Person{
    // atteributes or property of class
    var $first_name;
    var $last_name;
    var $legs = 2;
    var $hand = 2;
    var $gender;
    function say_hello(){
        echo "Hello inside the class from " . get_class($this) . "<br />";
    }
    // full name function
    function full_name(){
        echo $this->first_name ." ". $this->last_name;
    }
    // Gender
    function gender(){
        $names = array("Hamza","Ali","Ibrar","Muqeet","Hassan","Umer","Shaveer");
        if(in_array($this->first_name, $names)){
            echo $this->gender = "Male";
        }
        else {
            echo $this->gender = "Female";
        }
    }
}

$person = new Person();
$person->first_name = "Hamza";
$person->last_name = "Nisar";
$person->full_name();
echo "<br />";
$person->gender();
echo "<br />";
/*---------------------*/
$person2 = new Person();
$person2->first_name = "Ibrar";
$person2->last_name = "Ahmed";
$person2->full_name();
echo "<br />";
$person2->gender();
echo "<br />";

?>

Answer 3

<?php

class Person{
    // atteributes or property of class
    var $first_name;
    var $last_name;
    var $legs = 2;
    var $hand = 2;
    var $gender;
    function say_hello(){
        echo "Hello inside the class from " . get_class($this) . "<br />";
    }
    // full name function
    function full_name(){
        echo $this->first_name ." ". $this->last_name;
    }
    // Gender
    function gender($newname){
        $names = array("Hamza","Ali","Ibrar","Muqeet","Hassan","Umer","Shaveer");
        if(in_array($this->first_name, $names)){
            echo $this->gender = "Male";            
        }else{
            echo $this->gender = "Female";          
        }
    }
}

$person = new Person();
$person->first_name = "Hamza";
$person->last_name = "Nisar";
$person->full_name();
echo "<br />";
$person->gender($person->first_name);
echo "<br />";
/*---------------------*/
$person2 = new Person();
$person2->first_name = "Ibrar";
$person2->last_name = "Ahmed";
$person2->full_name();
echo "<br />";
$person2->gender($person2->first_name);
echo "<br />";
?>