PHP/Data Type/intval
Checking for a number range
<source lang="html4strict">
if ($_POST["age"] != strval(intval($_POST["age"]))) {
$errors[] = "Your age must be a number.";
} elseif (($_POST["age"] < 18) || ($_POST["age"] > 65)) {
$errors[] = "Your age must be at least 18 and no more than 65.";
}
</source>
intval() function: pass a second parameter that specifies the base for the conversion
<source lang="html4strict">
<?php echo intval("123", 10) . "\n"; echo intval("101010", 2) . "\n"; echo intval("123", 8) . "\n"; echo intval("123", 16) . "\n"; echo intval("H123", 32) . "\n"; echo intval("H123", 36) . "\n"; ?>
</source>
intval() function: pass a second parameter that specifies the base to use for the conversion.
<source lang="html4strict">
The default value is 10, but it"s possible to use base 2 (binary), 8 (octal), 16 (hexadecimal), or any other value such as 32 or 36 <?php echo intval("123", 10) . "\n"; echo intval("101010", 2) . "\n"; echo intval("123", 8) . "\n"; echo intval("123", 16) . "\n"; echo intval("H123", 32) . "\n"; echo intval("H123", 36) . "\n"; ?>
</source>