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What's the difference between WordPress random_int() and PHP built-in function random_int()?
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What's the difference between WordPress defined function random_int() and PHP built-in function random_int()?
Also, if there is a difference, how does the PHP interpreter understand which of the two functions I'm calling?
functions
edited Aug 29 at 11:21
Fayaz
5,13811228
asked Aug 28 at 12:22
Juri Rudi
695
add a comment |Â
up vote
7
down vote
favorite
What's the difference between WordPress defined function random_int() and PHP built-in function random_int()?
Also, if there is a difference, how does the PHP interpreter understand which of the two functions I'm calling?
functions
edited Aug 29 at 11:21
Fayaz
5,13811228
asked Aug 28 at 12:22
Juri Rudi
695
add a comment |Â
up vote
7
down vote
favorite
up vote
7
down vote
favorite
What's the difference between WordPress defined function random_int() and PHP built-in function random_int()?
Also, if there is a difference, how does the PHP interpreter understand which of the two functions I'm calling?
functions
edited Aug 29 at 11:21
Fayaz
5,13811228
asked Aug 28 at 12:22
Juri Rudi
695
What's the difference between WordPress defined function random_int() and PHP built-in function random_int()?
Also, if there is a difference, how does the PHP interpreter understand which of the two functions I'm calling?
functions
edited Aug 29 at 11:21
Fayaz
5,13811228
asked Aug 28 at 12:22
Juri Rudi
695
edited Aug 29 at 11:21
Fayaz
5,13811228
edited Aug 29 at 11:21
Fayaz
5,13811228
edited Aug 29 at 11:21
Fayaz
5,13811228
5,13811228
asked Aug 28 at 12:22
Juri Rudi
695
asked Aug 28 at 12:22
Juri Rudi
695
asked Aug 28 at 12:22
Juri Rudi
695
695
add a comment |Â
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
13
down vote
accepted
WordPress is old. In fact, it is older than PHP7, in which PHP introduced random_int(). WP wanted/needed this functionality before, so another method was implemented.
how does the PHP interpreter understand which of the two functions I'm calling?
Good question. The interpreter doesn't understand this. And hence, if you had PHP7 and would define this function new, you would get an error. This is why. the file with the function definition is only loaded, when random_int() is not available by default.
wp-includes/random_compat/random.php lines 212-214 are
if (!function_exists('random_int'))
require_once $RandomCompatDIR.'/random_int.php';
So if your server is PHP7 and PHP's own
random_int()is callable, this one is used and the file never included.If your server is not PHP7 or PHP's own
random_int()is not callable for any reasons, the file is included and another implementation will be given.
This is done, so WordPress can run on different systems. Those with PHP5 and those with PHP7.
How is it different? I can't really speak to it. The files WP uses seem to be from this random_compat repository, which is also linked from the PHP doc (and suggested if you don't have PHP's own implementation available).
One quick difference that I already saw: PHP's random_int() tries to use getrandom(2) on Linux machines, while the compat random_int() only uses /dev/urandom.
When in doubt, I would use the system's versions (PHP) instead of those introduced by software (WP). But that is only my opinion.
answered Aug 28 at 12:36
kero
2,6771823
"When in doubt, I would use the system's versions" It sounds like you explain at the start of your answer that you can't choose. Either it's already in there (PHP >= 7) and WP won't load it, or it's not there so WP will load it. Is there a middle ground where you pick yourself (disabling WP's function explicitly, I presume)? Sure, you can make any modification you want. But is it worth it to go non-standard in what seems like a relatively core function?
– Mast
Aug 28 at 18:19
@Mast There's always a way. You could load that repository and simply change the function names (random_int_custom()eg) for it to be usable. The last comment was rather meant as a: it makes sense that it works this way (rather using system functions than your own), and I wouldn't recommend going the extra miles to circumvent this
– kero
Aug 29 at 10:10
1
You don't recommend going the extra miles, ok. That's all I wanted to know :-)
– Mast
Aug 29 at 10:23
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
13
down vote
accepted
WordPress is old. In fact, it is older than PHP7, in which PHP introduced random_int(). WP wanted/needed this functionality before, so another method was implemented.
how does the PHP interpreter understand which of the two functions I'm calling?
Good question. The interpreter doesn't understand this. And hence, if you had PHP7 and would define this function new, you would get an error. This is why. the file with the function definition is only loaded, when random_int() is not available by default.
wp-includes/random_compat/random.php lines 212-214 are
if (!function_exists('random_int'))
require_once $RandomCompatDIR.'/random_int.php';
So if your server is PHP7 and PHP's own
random_int()is callable, this one is used and the file never included.If your server is not PHP7 or PHP's own
random_int()is not callable for any reasons, the file is included and another implementation will be given.
This is done, so WordPress can run on different systems. Those with PHP5 and those with PHP7.
How is it different? I can't really speak to it. The files WP uses seem to be from this random_compat repository, which is also linked from the PHP doc (and suggested if you don't have PHP's own implementation available).
One quick difference that I already saw: PHP's random_int() tries to use getrandom(2) on Linux machines, while the compat random_int() only uses /dev/urandom.
When in doubt, I would use the system's versions (PHP) instead of those introduced by software (WP). But that is only my opinion.
answered Aug 28 at 12:36
kero
2,6771823
"When in doubt, I would use the system's versions" It sounds like you explain at the start of your answer that you can't choose. Either it's already in there (PHP >= 7) and WP won't load it, or it's not there so WP will load it. Is there a middle ground where you pick yourself (disabling WP's function explicitly, I presume)? Sure, you can make any modification you want. But is it worth it to go non-standard in what seems like a relatively core function?
– Mast
Aug 28 at 18:19
@Mast There's always a way. You could load that repository and simply change the function names (random_int_custom()eg) for it to be usable. The last comment was rather meant as a: it makes sense that it works this way (rather using system functions than your own), and I wouldn't recommend going the extra miles to circumvent this
– kero
Aug 29 at 10:10
1
You don't recommend going the extra miles, ok. That's all I wanted to know :-)
– Mast
Aug 29 at 10:23
add a comment |Â
up vote
13
down vote
accepted
WordPress is old. In fact, it is older than PHP7, in which PHP introduced random_int(). WP wanted/needed this functionality before, so another method was implemented.
how does the PHP interpreter understand which of the two functions I'm calling?
Good question. The interpreter doesn't understand this. And hence, if you had PHP7 and would define this function new, you would get an error. This is why. the file with the function definition is only loaded, when random_int() is not available by default.
wp-includes/random_compat/random.php lines 212-214 are
if (!function_exists('random_int'))
require_once $RandomCompatDIR.'/random_int.php';
So if your server is PHP7 and PHP's own
random_int()is callable, this one is used and the file never included.If your server is not PHP7 or PHP's own
random_int()is not callable for any reasons, the file is included and another implementation will be given.
This is done, so WordPress can run on different systems. Those with PHP5 and those with PHP7.
How is it different? I can't really speak to it. The files WP uses seem to be from this random_compat repository, which is also linked from the PHP doc (and suggested if you don't have PHP's own implementation available).
One quick difference that I already saw: PHP's random_int() tries to use getrandom(2) on Linux machines, while the compat random_int() only uses /dev/urandom.
When in doubt, I would use the system's versions (PHP) instead of those introduced by software (WP). But that is only my opinion.
answered Aug 28 at 12:36
kero
2,6771823
"When in doubt, I would use the system's versions" It sounds like you explain at the start of your answer that you can't choose. Either it's already in there (PHP >= 7) and WP won't load it, or it's not there so WP will load it. Is there a middle ground where you pick yourself (disabling WP's function explicitly, I presume)? Sure, you can make any modification you want. But is it worth it to go non-standard in what seems like a relatively core function?
– Mast
Aug 28 at 18:19
@Mast There's always a way. You could load that repository and simply change the function names (random_int_custom()eg) for it to be usable. The last comment was rather meant as a: it makes sense that it works this way (rather using system functions than your own), and I wouldn't recommend going the extra miles to circumvent this
– kero
Aug 29 at 10:10
1
You don't recommend going the extra miles, ok. That's all I wanted to know :-)
– Mast
Aug 29 at 10:23
add a comment |Â
up vote
13
down vote
accepted
up vote
13
down vote
accepted
WordPress is old. In fact, it is older than PHP7, in which PHP introduced random_int(). WP wanted/needed this functionality before, so another method was implemented.
how does the PHP interpreter understand which of the two functions I'm calling?
Good question. The interpreter doesn't understand this. And hence, if you had PHP7 and would define this function new, you would get an error. This is why. the file with the function definition is only loaded, when random_int() is not available by default.
wp-includes/random_compat/random.php lines 212-214 are
if (!function_exists('random_int'))
require_once $RandomCompatDIR.'/random_int.php';
So if your server is PHP7 and PHP's own
random_int()is callable, this one is used and the file never included.If your server is not PHP7 or PHP's own
random_int()is not callable for any reasons, the file is included and another implementation will be given.
This is done, so WordPress can run on different systems. Those with PHP5 and those with PHP7.
How is it different? I can't really speak to it. The files WP uses seem to be from this random_compat repository, which is also linked from the PHP doc (and suggested if you don't have PHP's own implementation available).
One quick difference that I already saw: PHP's random_int() tries to use getrandom(2) on Linux machines, while the compat random_int() only uses /dev/urandom.
When in doubt, I would use the system's versions (PHP) instead of those introduced by software (WP). But that is only my opinion.
answered Aug 28 at 12:36
kero
2,6771823
WordPress is old. In fact, it is older than PHP7, in which PHP introduced random_int(). WP wanted/needed this functionality before, so another method was implemented.
how does the PHP interpreter understand which of the two functions I'm calling?
Good question. The interpreter doesn't understand this. And hence, if you had PHP7 and would define this function new, you would get an error. This is why. the file with the function definition is only loaded, when random_int() is not available by default.
wp-includes/random_compat/random.php lines 212-214 are
if (!function_exists('random_int'))
require_once $RandomCompatDIR.'/random_int.php';
So if your server is PHP7 and PHP's own
random_int()is callable, this one is used and the file never included.If your server is not PHP7 or PHP's own
random_int()is not callable for any reasons, the file is included and another implementation will be given.
This is done, so WordPress can run on different systems. Those with PHP5 and those with PHP7.
How is it different? I can't really speak to it. The files WP uses seem to be from this random_compat repository, which is also linked from the PHP doc (and suggested if you don't have PHP's own implementation available).
One quick difference that I already saw: PHP's random_int() tries to use getrandom(2) on Linux machines, while the compat random_int() only uses /dev/urandom.
When in doubt, I would use the system's versions (PHP) instead of those introduced by software (WP). But that is only my opinion.
answered Aug 28 at 12:36
kero
2,6771823
edited Aug 28 at 14:02
answered Aug 28 at 12:36
kero
2,6771823
answered Aug 28 at 12:36
kero
2,6771823
answered Aug 28 at 12:36
kero
2,6771823
2,6771823
"When in doubt, I would use the system's versions" It sounds like you explain at the start of your answer that you can't choose. Either it's already in there (PHP >= 7) and WP won't load it, or it's not there so WP will load it. Is there a middle ground where you pick yourself (disabling WP's function explicitly, I presume)? Sure, you can make any modification you want. But is it worth it to go non-standard in what seems like a relatively core function?
– Mast
Aug 28 at 18:19
@Mast There's always a way. You could load that repository and simply change the function names (random_int_custom()eg) for it to be usable. The last comment was rather meant as a: it makes sense that it works this way (rather using system functions than your own), and I wouldn't recommend going the extra miles to circumvent this
– kero
Aug 29 at 10:10
1
You don't recommend going the extra miles, ok. That's all I wanted to know :-)
– Mast
Aug 29 at 10:23
add a comment |Â
"When in doubt, I would use the system's versions" It sounds like you explain at the start of your answer that you can't choose. Either it's already in there (PHP >= 7) and WP won't load it, or it's not there so WP will load it. Is there a middle ground where you pick yourself (disabling WP's function explicitly, I presume)? Sure, you can make any modification you want. But is it worth it to go non-standard in what seems like a relatively core function?
– Mast
Aug 28 at 18:19
@Mast There's always a way. You could load that repository and simply change the function names (random_int_custom()eg) for it to be usable. The last comment was rather meant as a: it makes sense that it works this way (rather using system functions than your own), and I wouldn't recommend going the extra miles to circumvent this
– kero
Aug 29 at 10:10
1
You don't recommend going the extra miles, ok. That's all I wanted to know :-)
– Mast
Aug 29 at 10:23
"When in doubt, I would use the system's versions" It sounds like you explain at the start of your answer that you can't choose. Either it's already in there (PHP >= 7) and WP won't load it, or it's not there so WP will load it. Is there a middle ground where you pick yourself (disabling WP's function explicitly, I presume)? Sure, you can make any modification you want. But is it worth it to go non-standard in what seems like a relatively core function?
– Mast
Aug 28 at 18:19
"When in doubt, I would use the system's versions" It sounds like you explain at the start of your answer that you can't choose. Either it's already in there (PHP >= 7) and WP won't load it, or it's not there so WP will load it. Is there a middle ground where you pick yourself (disabling WP's function explicitly, I presume)? Sure, you can make any modification you want. But is it worth it to go non-standard in what seems like a relatively core function?
– Mast
Aug 28 at 18:19
@Mast There's always a way. You could load that repository and simply change the function names (
random_int_custom() eg) for it to be usable. The last comment was rather meant as a: it makes sense that it works this way (rather using system functions than your own), and I wouldn't recommend going the extra miles to circumvent this– kero
Aug 29 at 10:10
@Mast There's always a way. You could load that repository and simply change the function names (
random_int_custom() eg) for it to be usable. The last comment was rather meant as a: it makes sense that it works this way (rather using system functions than your own), and I wouldn't recommend going the extra miles to circumvent this– kero
Aug 29 at 10:10
1
1
You don't recommend going the extra miles, ok. That's all I wanted to know :-)
– Mast
Aug 29 at 10:23
You don't recommend going the extra miles, ok. That's all I wanted to know :-)
– Mast
Aug 29 at 10:23
add a comment |Â
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