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Use "more entropy" option for uniqid() #20132

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javiereguiluz
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Q A
Branch? 2.7
Bug fix? no
New feature? no
BC breaks? no
Deprecations? no
Tests pass? yes
Fixed tickets -
License MIT
Doc PR -

As you can see in the source code of the PHP uniqid() function when you don't pass true as the second argument, PHP sleeps the application for 1 microsecond (usleep(1))

Symfony uses true almost everywhere, but there are still some places (mostly in bundles) where this is not the case.

@xarem
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xarem commented Oct 3, 2016

Hi @javiereguiluz

i found some other usages without more entropy option:

@javiereguiluz
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@xarem thanks! I've updated this PR and created another one (#20137) for the change related to the Cache component.

@nicolas-grekas
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👍

@fabpot
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fabpot commented Oct 3, 2016

Thank you @javiereguiluz.

fabpot added a commit that referenced this pull request Oct 3, 2016
This PR was squashed before being merged into the 2.7 branch (closes #20132).

Discussion
----------

Use "more entropy" option for uniqid()

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

As you can see in [the source code of the PHP uniqid() function](https://github.com/php/php-src/blob/1c295d4a9ac78fcc2f77d6695987598bb7abcb83/ext/standard/uniqid.c#L68) when you don't pass `true` as the second argument, PHP sleeps the application for 1 microsecond (`usleep(1)`)

Symfony uses `true` almost everywhere, but there are still some places (mostly in bundles) where this is not the case.

Commits
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4403e28 Use "more entropy" option for uniqid()
@fabpot fabpot closed this Oct 3, 2016
fabpot added a commit that referenced this pull request Oct 3, 2016
This PR was merged into the 3.2-dev branch.

Discussion
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Add "more entropy" to every uniqid() call

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Same as #20132 but for the master branch

Commits
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50a8c1f Add "more entropy" to every uniqid() call
This was referenced Oct 3, 2016
fabpot added a commit that referenced this pull request Jul 10, 2024
This PR was merged into the 5.4 branch.

Discussion
----------

use more entropy with uniqid()

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

It looked like using `uniqid()` without opting for more entropy slipped in after #20132 and #20137.

Commits
-------

770e7fc use more entropy with uniqid()
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5 participants