Convert string to integer manual#
Convert string to integer archive#

And based on the radix value, if the radix value is 8, then it converts from octal, if the radix value is 16 then it converts from hexadecimal, a radix of 10 converts from the decimal, and so on. The return value is going to be an integer, if the return value is not Nan, and the return value is based on the first argument passed.

First, the argument is converted to a string.

Now, go through the description for this parseInt():

The first character which is non-whitespace is not going to convert to a number.

The modulo 2**32 of the radix is greater than 36 and smaller than 2.

When a string is given as an argument to the parseInt, an integer is parsed.Д«ut in certain cases, it can also be NaN, just like: Now you will look into the return values: It will be corrected to a number if the radix value is not a number type. So this is how the radix of the string is represented. The radix is represented by a range of integers from 2 to 36. Radix is the base of the mathematical numeral system. The second parameter is an optional parameter which is radix:

If in this argument, a white space is leading, then it is ignored. If the argument which has been passed is not a string, then it is converted to a string using an operation which is called toString. So the first parameter is String, this is the value that is to be parsed. If you specify the base argument, the var argument should be a string - otherwise the base will not be applied.Now, explore the parameters which should be passed to this function: One additional note on the behavior of intval. '099' will convert to 99, while '0x99' will convert to 0.

'1.4e98 microLenats were generated when.' will convert to 1.4e98ДЄlso note that only decimal base numbers are recognized in strings. '$1,000,000' will convert to 0 (the 1st character is not a valid start for a number However, if the leftmost character of a string looks like a valid numeric value, then PHP will keep reading the string until a character that is not valid in a number is encountered.

Convert string to integer manual#

This will most likely print out 7, instead of the expected value of 8.ДЇor more information, see the section on floating point numbers in the PHP manual ( )ДЄlso note that if you try to convert a string to an integer, the result is often 0. When dealing with some values, this can give odd results. Intval converts doubles to integers by truncating the fractional component of the number.

Convert string to integer archive#

Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search