Question

这是一个简化的示例。

尝试生成带有变量的句子，这些变量的字符串在每次迭代中都会改变。例如：

/*
stringText.php
<?php
$sentences = [
"Hello there, $name.",
"Your gender is $gender",
"Are you $age years old?",
]
?>
*/
$attributes = [
    ['name'=>'anna','age'=>14, 'gender'=>'female'],
    ['name'=>'frank','age'=>16, 'gender'=>'male'],
    ['name'=>'dan','age'=>15, 'gender'=>'male'],
    ['name'=>'lara','age'=>16, 'gender'=>'female'],
];

foreach($attributes as $val){
    $name = $val['name'];
    $age = $val['age'];
    $gender = $val['gender'];
    include('stringText.php');
    echo $sentences[rand(0,2)].'<br/>';
}

有没有一种方法可以在不每次都调用“ include”的情况下进行操作？也许将include的值存储在变量中或类似的东西中？

Answer 1

您有两个选择-使您的$sentences变量成为一个函数，并将值传递给它，并返回一个值；

<?php
function sentences($name, $gender, $age){
    $sentences = [
    "Hello there, $name.",
    "Your gender is $gender",
    "Are you $age years old?",
    ];
    return $sentences[rand(0,2)];
}

$attributes = [
    ['name'=>'anna','age'=>14, 'gender'=>'female'],
    ['name'=>'frank','age'=>16, 'gender'=>'male'],
    ['name'=>'dan','age'=>15, 'gender'=>'male'],
    ['name'=>'lara','age'=>16, 'gender'=>'female'],
];

include('stringText.php');
foreach($attributes as $val){
    $name = $val['name'];
    $age = $val['age'];
    $gender = $val['gender'];
    echo sentences($val['name'],$val['gender'],$val['age']).'<br/>';
}

您可以在$val函数中直接传递sentences()数组并引用键/值，这将在将来提供更大的灵活性。

或者，您可以使用str_replace()替换字符串中的标记。例如；

<?php

$sentences = [
"Hello there, {{name}}",
"Your gender is {{gender}}",
"Are you {{age}} years old?",
];

$attributes = [
    ['name'=>'anna','age'=>14, 'gender'=>'female'],
    ['name'=>'frank','age'=>16, 'gender'=>'male'],
    ['name'=>'dan','age'=>15, 'gender'=>'male'],
    ['name'=>'lara','age'=>16, 'gender'=>'female'],
];

// include('stringText.php');
foreach($attributes as $val){
    $name = $val['name'];
    $age = $val['age'];
    $gender = $val['gender'];
    $sentence = $sentences[rand(0,2)];
    $sentence = str_replace(array('{{name}}','{{gender}}','{{age}}'),array($val['name'],$val['gender'],$val['age']),$sentence);
    echo $sentence.'<br/>';
}

Answer 2

我想要：

string_text.php

<?php
function sentences($name, $age, $gender)
  $s = ["Hello there, $name.", "Your gender is $gender.", "You are $age years old."];
  return $s[rand(0, 2)];
}
?>

other_page.php

<?php
require_once 'string_text.php';
$attributes = [
  ['name'=>'Anna','age'=>14, 'gender'=>'female'],
  ['name'=>'Frank','age'=>16, 'gender'=>'male'],
  ['name'=>'Dan','age'=>15, 'gender'=>'male'],
  ['name'=>'Lara','age'=>16, 'gender'=>'female']
];
foreach($attributes as $a){
  $r[] = sentences($a['name'], $a['age'], $a['gender']);
}
echo implode('<br />', $r);
?>

好吧，让我们现实一点吧……我将使用客户端JavaScript处理应该或不需要服务器操作的事情。

模拟字符串中变量的多个包含

2 个答案: