php - PHP函数回显文本

Question

这只是一个例子，但我可以解决这个问题吗？

function echoText($text){
    echo $text;
}

$text2 = echoText("Text");
echo "<h1>$text2</h1><br><h2>$text</h2><h3>$text</h3>";

但结果不是<h1>，<h2>或者<h3>，它只是简单的文本。

Answer 1

Your function is not returning the value, but echoing it out.

Try

function echoText($text){
    return $text;
}

Answer 2

如果我了解您要正确实现的目标，则需要：

function echoText($text) 
{
    return '<h1>'. $text .'</h1>';
}

然后你可以使用它：

$text2 = echoText('test');
echo $text2;

Answer 3

I think you mean this:

<?php
function echoText($text){
    echo $text;
}
$text2 = echoText("Text");
echo "<h1>".$text2."</h1><br><h2>".$text."</h2><h3>".$text."</h3>";

?>

You also need a return in your function.

Answer 4

$text2 contains nothing (well, null technically), because echoText() returns nothing.
return a value from echoText() or otherwise assign a value to $text2.