How to convert variable to array type in php

Method to convert to array type: 1. Add the target type "(array)" enclosed in parentheses before the numerical variable to be converted, and the syntax is "(array) conversion variable"; 2. Use settype () function, syntax "settype(conversion variable, "array")".

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

php will strengthen the variable Convert to array type

Method 1: Add the target type "(array)" enclosed in parentheses before the numerical variable to be converted

• (array): Convert to array type;

Example:

<?php
var_dump((array)2);
var_dump((array)0);  
var_dump((array)1); 
var_dump((array)100);
?>

Method 2: Use the settype() function

settype ($var,$type)The function can set the variable $var For the specified type $type, $type can set the value:

• "boolean" (or "bool" from PHP 4.2 .0 onwards)

• "integer" (or "int" onwards from PHP 4.2.0)

• "float" (only Available after PHP 4.2.0, "double" used in older versions is now deprecated)

• "string"

• "array"

• "object"

• "null" (since PHP 4.2.0)

Note: The settype() function will change the type of the variable itself.

Example:

<?php
header("Content-type:text/html;charset=utf-8");
$str = &#39;3542abc&#39;;
settype($str,"array");
echo &#39;修改后的类型为：&#39; . gettype($str) . &#39;<br>&#39;;
var_dump($str);
?>

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