(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gmp_cmp — Compare numbers
gmp_cmp(GMP|int|string $num1, GMP|int|string $num2): int
Compares two numbers.
num1 A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).
num2 A GMP object, an int, or a string that can be interpreted as a number following the same logic as if the string was used in gmp_init() with automatic base detection (i.e. when base is equal to 0).
Returns a positive value if a > b, zero if a = b and a negative value if a <
b.
Example #1 gmp_cmp() example
<?php
$cmp1 = gmp_cmp("1234", "1000"); // greater than
$cmp2 = gmp_cmp("1000", "1234"); // less than
$cmp3 = gmp_cmp("1234", "1234"); // equal to
echo "$cmp1 $cmp2 $cmp3\n";
?> The above example will output:
1 -1 0
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https://www.php.net/manual/en/function.gmp-cmp.php