php string number conversion method

php string number conversion method: 1. Use the intval function to convert the string into an integer, such as "intval($sum);"; 2. Use the floatval function to convert the string into a floating point number. Statements such as "floatval($sum);".

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The operating environment of this tutorial: Windows7 system, PHP7.3.3, the The method is applicable to all brands of computers.

php7.3.3-Conversion between strings and numbers

In usual PHP projects, we often use it to convert strings and numbers. , today I will introduce to you the methods of converting between them.

Convert strings to numbers. Here we use two functions of PHP, intval() and floatval();

<?php
$sum=&#39;99.99&#39;;
//利用intval函数将字符串转换为整数
echo intval($sum);
echo &#39;<hr/>&#39;;
//利用floatval函数将字符串转换为浮点数
echo floatval($sum);

Print results

99
99.99

To convert numbers to strings, here we can directly use PHP’s system function strval().

<?php
$int=99;
echo strval($int);

Print results

99

To summarize, intval() converts a string into a number, while the strval() function converts a number into a string.

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