Using abs() to obtain the absolute value of parameters in php

In the last article, we introduced "Using stripos() in php to obtain the position of the first occurrence of a string". This article will take you to take a look. abs()Function. In the daily use of php, we may need to obtain the absolute value of a variable. At this time, we can use the built-in function abs() function in php , this article first takes you to take a look at the syntax of the function:

abs   ( mixed $number    )

• $number: the numeric value to be processed.

• Return value : The absolute value of $number. If the parameter $number is float, the return type is also float, otherwise it returns integer (because float usually has a larger value range than integer).

Code example:

<?php

$abs = abs(-4.2); 
$abs2 = abs(5);   
$abs3 = abs(-5);  
echo $abs."<br>";
echo $abs2."<br>";
echo $abs3."<br>";
?>

输出：
4.2
5
5

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