How to convert string to decimal in php

php method to convert a string to a decimal: 1. Use the number_format() function, the syntax "number_format($str, decimal place value)"; 2. Use the sprintf() function to format the string, the syntax "sprintf("%. Decimal place value f",$str)".

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

php will string Method of converting to decimal

If it is a string containing decimals, you can use the round() function to convert the string into a numerical value and retain the specified number of decimal places.

But if it does not contain decimals, how can the value converted from a string have decimal places? Two methods are introduced below:

1. The function number_format() that uses thousands grouping to format numbers

<?php
$str = "12";
echo number_format($str, 2);;
?>

2. Use sprintf to format strings

<?php
$str = "12";
echo  sprintf("%.2f",$str);
echo "<br>";
$str = "12.jg";
echo  sprintf("%.2f",$str);
?>

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of How to convert string to decimal in php. For more information, please follow other related articles on the PHP Chinese website!