How to convert boolean type to string in php

php method to convert Boolean type to string: 1. Use strval() function, syntax "strval($bool)"; 2. Use settype() function, syntax "settype($bool, ' string')".

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

php will use Boolean type Convert to string

#Method 1: Use strval() function

strval() function: used to obtain the string value of a variable.

Example:

<?php
header("Content-type:text/html;charset=utf-8");
$bool1=true;
$bool2=false;
echo &#39;变量 $bool1 的类型为：&#39;.gettype($bool1).&#39;<br>&#39;;
echo &#39;变量 $bool2 的类型为：&#39;.gettype($bool2).&#39;<br><br>&#39;;
$str1=strval($bool1);
echo &#39;变量 $str1 的类型为：&#39;.gettype($str1).&#39;<br>&#39;;
$str2=strval($bool2);
echo &#39;变量 $str2 的类型为：&#39;.gettype($str2).&#39;<br>&#39;;
?>

Rendering:

##Method 2: Use the settype() function

settype() function: used to set the type of variables.

The type that can be set is:

• "boolean" (or "bool", starting from PHP 4.2.0)

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

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

• "string"

• "array"

• "object"

• "null" (from PHP 4.2.0)

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

Example:

<?php
header("Content-type:text/html;charset=utf-8");
$bool1=true;
$bool2=false;
echo &#39;原 $bool1 的类型为：&#39;.gettype($bool1).&#39;<br> 原 $bool2 的类型为：&#39;.gettype($bool2)."<br><br>";
settype($bool1, &#39;string&#39;);
settype($bool2, &#39;string&#39;);
echo &#39;现 $bool1 的类型为：&#39;.gettype($bool1).&#39;<br> 现 $bool2 的类型为：&#39;.gettype($bool2);

?>

Rendering:

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