1.2.1122. Silently Cast Integer¶
Those are integer literals that are cast to a float when running PHP. They are too big for the current PHP version, and PHP resorts to cast them into a float, which has a much larger capacity but a lower precision.
Compare your literals to PHP_MAX_INT (typically 9223372036854775807) and PHP_MIN_INT (typically -9223372036854775808).
This applies to binary (0b10101…), octal (0123123…) and hexadecimal (0xfffff…) too.
<?php
echo 0b1010101101010110101011010101011010101011010101011010101011010111;
//6173123008118052203
echo 0b10101011010101101010110101010110101010110101010110101010110101111;
//1.2346246016236E+19
echo 0123123123123123123123;
//1498121094048818771
echo 01231231231231231231231;
//1.1984968752391E+19
echo 0x12309812311230;
//5119979279159856
echo 0x12309812311230fed;
//2.0971435127439E+19
echo 9223372036854775807; //PHP_MAX_INT
//9223372036854775807
echo 9223372036854775808;
9.2233720368548E+18
?>
See also Integer overflow.
1.2.1122.1. Suggestions¶
Make sure hexadecimal numbers have the right number of digits : generally, it is 15, but it may depends on your PHP version.
1.2.1122.2. Specs¶
Short name |
Type/SilentlyCastInteger |
Rulesets |
|
Exakat since |
0.8.4 |
PHP Version |
All |
Severity |
Minor |
Time To Fix |
Quick (30 mins) |
Precision |
Very high |
Features |
cast, silent-cast |
Examples |
|
Available in |