Php numeros enteros

<?php
$a = 1234; // número decimal
$a = -123; // un número negativo
$a = 0123; // número octal (equivale a 83 decimal)
$a = 0x1A; // número hexadecimal (equivale a 26 decimal)
$a = 0b11111111; // número binario (equivale al 255 decimal)
?>

Source: php.net

Php numeros enteros

<?php
$a = 1234; // número decimal
$a = -123; // un número negativo
$a = 0123; // número octal (equivale a 83 decimal)
$a = 0x1A; // número hexadecimal (equivale a 26 decimal)
$a = 0b11111111; // número binario (equivale al 255 decimal)
?>

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Reference — What does this symbol mean in PHP?
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