PHP intval() function

In this chapter you will learn:

1. Description for PHP intval() function
2. Syntax for PHP intval() function
3. Parameter for PHP intval() function
4. Return value for PHP intval() function
5. Example - Find out the int value

Description

Returns the integer value of var, using the specified base for the conversion (the default is base 10).

Syntax

PHP intval() function has the following syntax.

Parameter

• var - The scalar value being converted to an integer
• base - The base for the conversion

If base is 0, the base used is determined by the format of var:

• if string includes a "0x" (or "0X") prefix, the base is taken as 16 (hex); otherwise,
• if string starts with "0", the base is taken as 8 (octal); otherwise, the base is taken as 10 (decimal).

Return

The integer value of var on success, or 0 on failure.

Example

Find out the int value

<?php/*from  j  ava2s. c  o m*/
echo intval(2) . "\n";                       // 2
echo intval(4.1) . "\n";                     // 4
echo intval('4') . "\n";                     // 4
echo intval('+42') . "\n";                   // 42
echo intval('-42') . "\n";                   // -42
echo intval(042) . "\n";                     // 34
echo intval('04') . "\n";                    // 4
echo intval(1e10) . "\n";                    // 1410065408
echo intval('1e10') . "\n";                  // 1
echo intval(0x1A) . "\n";                    // 26
echo intval(42, 8) . "\n";                   // 42
echo intval('42', 8) . "\n";                 // 34
echo intval(array()) . "\n";                 // 0
echo intval(array('foo', 'bar')) . "\n";     // 1
?>

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

1. Description for PHP is_array(value) function
2. Syntax for PHP is_array(value) function
3. Parameter for
4. Return value for
5. Example - Is it an array

PHP boolval() function

PHP floatval() function

PHP gettype() function

PHP intval() function

PHP is_array(value) function

PHP is_bool() function

PHP is_float() function

PHP is_int() function

PHP is_null() function

PHP is_numeric() function

PHP is_object() function

PHP is_resource() function

PHP is_string() function

PHP isset() function

PHP settype() function

PHP strval() function