gettype_PHP gettype()函数与示例
gettype
PHP gettype()函數 (PHP gettype() function)
In PHP, we have a library function gettype() to identify the type of data. The function is primarily used to sanity check the type of data being input in a variable. The function can identify the data into the following data types:
在PHP中,我們有一個庫函數gettype()來標識data的類型 。 該功能主要用于完整性檢查變量中輸入的數據類型。 該函數可以將數據識別為以下數據類型:
Integer
整數
Double
雙
String
串
Array
數組
Object
目的
Boolean
布爾型
Resource
資源資源
Null
空值
Unknown
未知
Syntax:
句法:
gettype($var)Where, $var is a variable containing data that needs to be checked.
其中, $ var是包含需要檢查的數據的變量。
Example 1:
范例1:
<?php // Creating variables with random datatype $var1 = 1; $var2 = 1.1; $var3 = NULL; $var4 = "example"; $var5 = false;// using gettype() function to // get the data type of the variable echo gettype($var1)."\n"; echo gettype($var2)."\n"; echo gettype($var3)."\n"; echo gettype($var4)."\n"; echo gettype($var5)."\n"; ?>Output
輸出量
integer double NULL string booleanExample 2:
范例2:
<?php// creating an array with random datatypes$arr = array(21, 1.99, new stdClass, "hello, World", false);// getting the type of each element of array// foreach is used to initialize array // as independent valuesforeach ($arr as $value) {// getting and printing the typeecho gettype($value), "\n";} ?>Output
輸出量
integer double object string boolean翻譯自: https://www.includehelp.com/php/gettype-function-with-example.aspx
gettype
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