The data types that can be output in php are

There are three ways to output data types in PHP: use the gettype() function to return the data type of the variable. Use the var_dump() function to provide more detailed information, including data types. Use the print_r() function to print the data value and include the data type.

How to output data types in PHP

PHP provides a variety of methods to output data types. The following are the most common methods:

1. Use the gettype() function

gettype() function to return a variable The data type, the result is a string.

<code class="php">$x = 5;
echo gettype($x); // 输出：integer
$y = "Hello";
echo gettype($y); // 输出：string</code>

2. Use the var_dump() function

var_dump() function provides more detailed information about variables , including its data type.

<code class="php">$x = 5;
var_dump($x);
// 输出：
// int(5)</code>

3. Use the print_r() function

print_r() function to convert the value of the variable to an easy-to-read format. The format is printed to the output, including its data type.

<code class="php">$x = 5;
print_r($x);
// 输出：
// 5</code>

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