How to force string to array in php

php method to force a string to an array: 1. Add the target type "(array)" enclosed in parentheses before the string variable to be converted, the syntax is "(array)$str" ;2. Use the settype() function to set the type of the variable, the syntax is "settype($str,"array")".

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

Method 1: In the computer to be converted The string variable is preceded by the target type enclosed in parentheses (array)

<?php
header("Content-type:text/html;charset=utf-8");
$str="php中文网";
$arr=(array)$str;
var_dump($arr);
?>

Output result:

Method 2: Use the settype() function

settype() - Set the type of the variable

Syntax: settype ($var,$type) Possible values ​​for

type are:

• "boolean" (or "bool" since PHP 4.2.0)

• "integer" (or "int" since PHP 4.2.0)

• "float" (only available after PHP 4.2.0, for older versions The "double" used is now deprecated)

• "string"

• "array"

• "object"

• "null" (from PHP 4.2.0)

Example: Convert string $str to array

<?php
header("Content-type:text/html;charset=utf-8");
$str="php中文网";
$arr=settype($str,"array");
var_dump($str);
var_dump($arr);
?>

Output result:

Description: settype() will modify the type of the variable itself. If the setting is successful, it will return true. If it fails, it will return false.

Therefore, in the above example, using var_dump($str) to print the variable $str will output an array structure.

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