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octdec

(PHP 4, PHP 5, PHP 7, PHP 8)

octdecDa ottale a decimale

Descrizione

octdec(string $stringa_ottale): int

Restituisce l'equivalente decimale del numero ottale rappresentato dall'argomento stringa_ottale. OctDec converte una stringa ottale in un numero decimale. Il più grande numero che può essere convertito è 17777777777 o 2147483647 in decimale.

Example #1 Esempio per octdec()

<?php
echo octdec('77') . "\n";
echo
octdec(decoct(45));
?>

L'esempio precedente visualizzerà:

63 
45

Vedere anche decoct(), bindec(), hexdec() e base_convert().

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User Contributed Notes 3 notes

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2
Anonymous
21 years ago
The 'S' flag for Unix file access rights is badly computed in the above sample.
If the corresponding 'x' bit (exec) is not set, and the 's' bit (setgid/setuid/sticky) is set, then the flag should not be displayed as and uppercase 'S', but as a lower case 's'. Also the sticky bit (mainly used for folders with public right access rights such as /tmp to protect against deletion by non owner) is badly named ("text"?).
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2
contato at andersonfraga dot net
15 years ago
Number is octal?

Simple and easy:

<?php

function is_octal($x) {
return
decoct(octdec($x)) == $x;
}

echo
is_octal(077); // true
echo is_octal(195); // false

?>

Thanks
[]'s
up
0
harry at disgruntledgoat dot com
17 years ago
Calling the sticky bit "text" is not erroneous: On UNIX back in 1974, it instructed the operating system to retain the text segment of the program in swap space after the process exited. This speeded subsequent executions by allowing the kernel to make a single operation of moving the program from swap to real memory.
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