What data types can be output in php?

The functions that output data types in PHP are: 1. var_dump(), prints the data type and value of the variable; 2. gettype(), returns the data type string of the variable.

Functions that output data types in PHP

The functions that output data types in PHP mainly include the following two:

1. var_dump()

var_dump() function prints the data type and value of the variable on the screen. It provides detailed information about the variable type, size, and value.

Syntax:

<code class="php">var_dump($variable);</code>

For example:

<code class="php"><?php
$name = "John Doe";
var_dump($name);
?></code>

Output:

<code>string(7) "John Doe"</code>

2. gettype()

gettype() function returns the data type of the variable. It returns the data type in string form.

Grammar:

<code class="php">gettype($variable);</code>

For example:

<code class="php"><?php
$age = 25;
echo gettype($age); // 输出："integer"
?></code>

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