How to convert numbers to strings in php

The way PHP converts numbers to strings is to use the conversion function strval, such as [$str=strval($float);]. You can also use forced type conversion to achieve this, that is, add the target type enclosed in parentheses before the variable to be converted.

Conversion method:

1. Add the target type enclosed in parentheses before the variable to be converted

2. Use three specific types of conversion functions, intval(), floatval(), strval() [Memory: the destination type val() you want to convert]

3. Use the general type conversion function settype(mixed var, string type)

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The first conversion method: (int) (bool) (float) (string) (array) (object)

<?php   
$num1=3.14;
$num2=(int)$num1;
var_dump($num1);
//输出float(3.14)   
var_dump($num2);
//输出int(3)   
?>

The second conversion method: intval() floatval() strval()

<?php   
$str="123.9abc";
$int=intval($str);
//转换后数值：123   
$float=floatval($str);
//转换后数值：123.9   
$str=strval($float);
//转换后字符串："123.9"    
?>

The third conversion method: settype();

<?php   
$num4=12.8;
$flg=settype($num4,"int");
var_dump($flg);
//输出bool(true)   
var_dump($num4);
//输出int(12)   
?>

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