What is the php integer to string function?

php functions that convert integers to strings include: 1. strval() function, which can obtain the string value of a variable, with the syntax format "strval (integer variable)"; 2. settype() function , this function can set the type of variable, the syntax format is "settype(integer variable,'string')".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php integer to String method

#1. Use the strval() function

The strval() function is used to obtain the string value of a variable. The syntax is as follows:

strval($var)

Parameter description:

• $var: can be any scalar type, but cannot be an array or object.

Example:

<?php
$int_str= 123;
var_dump($int_str);
$str = strval(123);
var_dump($str);
?>

Output:

int(123)
string(3) "123"

Explanation: The strval() function converts the data type, but will not affect the original variable type.

2. Use the settype() function

The settype() function is used to set the type of a variable. The syntax is as follows:

settype ( $var , $type )

Return value: TRUE is returned when the setting is successful, and FALSE is returned when the setting fails.

Example:

<?php
  $old=500;
    echo "原类型".gettype($old),&#39;<hr>&#39;;
    $current=gettype(settype($old,&#39;string&#39;));
    echo "现类型". gettype($current),&#39;<hr>&#39;;
?>

Output:

原类型integer
现类型string

Explanation: The settype() function will affect the type of the original variable.

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