Complete list of PHP numerical conversion functions and usage analysis

PHP is a very commonly used server-side scripting language and is widely used in the field of web development. In PHP, numerical conversion is a very common requirement in actual development. In order to better handle and convert different types of values, PHP provides a series of value conversion functions. This article will introduce the commonly used numerical conversion functions in PHP and give specific usage and code examples.

1. intval() function

intval() function is used to get the integer value of a variable. This function can filter out the integer part of the string and return it. If the parameter passed in is not a number or string, 0 is returned. An example is as follows:

$num = "123abc";
$result = intval($num);
echo $result; // Output 123

2. floatval() function

floatval() function is used to obtain the floating point value of a variable. If the parameter passed in is not a number or string, 0 is returned. An example is as follows:

$num = "12.34abc";
$result = floatval($num);
echo $result; // Output 12.34

3. number_format() function

number_format() function is used to format numbers, you can specify the number of decimal places and thousands separator and decimal point symbols. An example is as follows:

$num = 12345.6789;
$result = number_format($num, 2, ".", ",");
echo $result; // Output 12,345.68

4. bindec() function

bindec() function is used to convert binary numbers to decimal numbers. An example is as follows:

$binNum = "1101";
$result = bindec($binNum);
echo $result; // Output 13

5. hexdec() function

hexdec() function is used to convert hexadecimal numbers to decimal numbers. An example is as follows:

$hexNum = "1A";
$result = hexdec($hexNum);
echo $result; // Output 26

6. octdec() function

octdec() function is used to convert octal numbers to decimal numbers. An example is as follows:

$octNum = "17";
$result = octdec($octNum);
echo $result; // Output 15

Through the above introduction, we understand the commonly used numerical conversion functions in PHP and their basic usage. In actual development, numerical type data can be processed more effectively by selecting appropriate conversion methods according to different needs. Hope this article is helpful to everyone.

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