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<title>[44407] branches/5.0/tests/phpunit/tests/functions.php: General: Introduce `wp_unique_id()`, a PHP implementation of Underscore's `uniqueId` method.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/44407">44407</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/44407","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>desrosj</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2019-01-06 20:07:34 +0000 (Sun, 06 Jan 2019)</dd>
</dl>
<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>General: Introduce `wp_unique_id()`, a PHP implementation of Underscore's `uniqueId` method.
A static variable contains an integer that is incremented with each call. This number is returned with the optional prefix.
As such the returned value is not universally unique, but it is unique across the life of the PHP process.
Props westonruter, dlh.
Merges <a href="https://core.trac.wordpress.org/changeset/43658">[43658]</a> and <a href="https://core.trac.wordpress.org/changeset/44406">[44406]</a> to the 5.0 branch.
See <a href="https://core.trac.wordpress.org/ticket/44883">#44883</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches50srcwpincludesfunctionsphp">branches/5.0/src/wp-includes/functions.php</a></li>
<li><a href="#branches50testsphpunittestsfunctionsphp">branches/5.0/tests/phpunit/tests/functions.php</a></li>
</ul>
<h3>Property Changed</h3>
<ul>
<li><a href="#branches50">branches/5.0/</a></li>
</ul>
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<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/5.0
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/5.0 2019-01-06 19:51:14 UTC (rev 44406)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/5.0 2019-01-06 20:07:34 UTC (rev 44407)
</ins><a id="branches50"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/5.0</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/3.3:20543
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/3.4:21757
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/4.9:43557,43622
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42250-42251,42256-42261,42350,42354,42358,42362,42364-42368,42374,42388,42390,42401,42405,42417,42421,42423-42425,42430,42432-42433,42437,42441,42443-42444,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42642,42648,42652-42653,42665,42676,42687,42695,42697,42701-42702,42711,42713,42719,42722,42726,42728,42733,42739-42740,42744,42758,42772,42791-42792,42801,42807,42812,42814-42815,42817-42819,42823,42830,42837,42839
,42841,42844,42851-42852,42860,42862,42864,42878-42879,42881,42888-42889,42892-42894,42930,42964-42965,42967,42971-42972,42977-42978,42980-42982,42985-42987,42989,42992,42994-42995,42998-42999,43001-43004,43007-43008,43011-43012,43014-43015,43025,43027,43030,43032,43034,43036,43039,43042,43044-43049,43051-43063,43065,43081,43085,43087-43089,43091,43104,43116,43118,43120-43121,43123,43125-43126,43131-43132,43135,43137,43139,43145-43148,43150,43154-43155,43158,43160,43162,43166,43168,43170,43172,43175,43180-43181,43183-43185,43189,43191,43193,43195,43197,43199,43201,43203,43206,43208,43210-43212,43216,43218,43220,43222-43223,43226,43228,43230,43232,43234,43236,43238,43242-43243,43245-43246,43248-43251,43256,43259-43260,43263,43265,43267,43269,43274-43275,43278-43279,43282,43284,43286,43290,43293,43299,43303-43304,43313,43315,43317,43331,43337,43343,43350,43353,43356,43361-43363,43365,43367,43370-43371,43373-43376,43379,43388,43390,43435,43437,43439-43440,43446-43447,43451,43454,43457,
43460,43462-43467,43469,43471,43475,43477-43478,43480,43486,43491,43493,43495,43499,43504,43506,43508,43511-43513,43518,43525,43527,43529,43531,43541,43550,43559,43561,43565,43567,43574,43578,43580,43584-43586,43589,43593,43597,43599,43601,43604-43605,43609,43636,43638,43645,43647,43653,43664,43673,44021,44048,44322,44338,44379,44389,44391,44398-44399,44403
</del><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:18512,42132,42134,42136,42138,42140,42144,42146,42148,42150,42152-42153,42155,42157,42159,42161,42163,42169,42171,42173,42175,42177,42181,42183,42185,42187,42189,42191,42193,42199,42203,42210,42214,42220,42222,42226,42242,42244,42247,42250-42251,42256-42261,42350,42354,42358,42362,42364-42368,42374,42388,42390,42401,42405,42417,42421,42423-42425,42430,42432-42433,42437,42441,42443-42444,42446-42447,42449,42451,42453,42457,42459,42462,42491,42521,42529,42531,42533,42536,42538,42541,42543,42545,42549,42566,42568,42570,42572,42574,42576,42579,42581-42582,42584-42585,42587-42588,42590,42592,42594-42595,42598-42599,42602,42604,42606,42611-42613,42615,42617,42624-42625,42639,42642,42648,42652-42653,42665,42676,42687,42695,42697,42701-42702,42711,42713,42719,42722,42726,42728,42733,42739-42740,42744,42758,42772,42791-42792,42801,42807,42812,42814-42815,42817-42819,42823,42830,42837,42839
,42841,42844,42851-42852,42860,42862,42864,42878-42879,42881,42888-42889,42892-42894,42930,42964-42965,42967,42971-42972,42977-42978,42980-42982,42985-42987,42989,42992,42994-42995,42998-42999,43001-43004,43007-43008,43011-43012,43014-43015,43025,43027,43030,43032,43034,43036,43039,43042,43044-43049,43051-43063,43065,43081,43085,43087-43089,43091,43104,43116,43118,43120-43121,43123,43125-43126,43131-43132,43135,43137,43139,43145-43148,43150,43154-43155,43158,43160,43162,43166,43168,43170,43172,43175,43180-43181,43183-43185,43189,43191,43193,43195,43197,43199,43201,43203,43206,43208,43210-43212,43216,43218,43220,43222-43223,43226,43228,43230,43232,43234,43236,43238,43242-43243,43245-43246,43248-43251,43256,43259-43260,43263,43265,43267,43269,43274-43275,43278-43279,43282,43284,43286,43290,43293,43299,43303-43304,43313,43315,43317,43331,43337,43343,43350,43353,43356,43361-43363,43365,43367,43370-43371,43373-43376,43379,43388,43390,43435,43437,43439-43440,43446-43447,43451,43454,43457,
43460,43462-43467,43469,43471,43475,43477-43478,43480,43486,43491,43493,43495,43499,43504,43506,43508,43511-43513,43518,43525,43527,43529,43531,43541,43550,43559,43561,43565,43567,43574,43578,43580,43584-43586,43589,43593,43597,43599,43601,43604-43605,43609,43636,43638,43645,43647,43653,43658,43664,43673,44021,44048,44322,44338,44379,44389,44391,44398-44399,44403,44406
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches50srcwpincludesfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/src/wp-includes/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/src/wp-includes/functions.php 2019-01-06 19:51:14 UTC (rev 44406)
+++ branches/5.0/src/wp-includes/functions.php 2019-01-06 20:07:34 UTC (rev 44407)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5794,6 +5794,26 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Get unique ID.
+ *
+ * This is a PHP implementation of Underscore's uniqueId method. A static variable
+ * contains an integer that is incremented with each call. This number is returned
+ * with the optional prefix. As such the returned value is not universally unique,
+ * but it is unique across the life of the PHP process.
+ *
+ * @since 5.0.3
+ *
+ * @staticvar int $id_counter
+ *
+ * @param string $prefix Prefix for the returned ID.
+ * @return string Unique ID.
+ */
+function wp_unique_id( $prefix = '' ) {
+ static $id_counter = 0;
+ return $prefix . (string) ++$id_counter;
+}
+
+/**
</ins><span class="cx" style="display: block; padding: 0 10px"> * Get last changed date for the specified cache group.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 4.7.0
</span></span></pre></div>
<a id="branches50testsphpunittestsfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/tests/phpunit/tests/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/tests/phpunit/tests/functions.php 2019-01-06 19:51:14 UTC (rev 44406)
+++ branches/5.0/tests/phpunit/tests/functions.php 2019-01-06 20:07:34 UTC (rev 44407)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -960,6 +960,34 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Tests wp_unique_id().
+ *
+ * @covers ::wp_unique_id
+ * @ticket 44883
+ */
+ function test_wp_unique_id() {
+
+ // Test without prefix.
+ $ids = array();
+ for ( $i = 0; $i < 20; $i += 1 ) {
+ $id = wp_unique_id();
+ $this->assertInternalType( 'string', $id );
+ $this->assertTrue( is_numeric( $id ) );
+ $ids[] = $id;
+ }
+ $this->assertEquals( $ids, array_unique( $ids ) );
+
+ // Test with prefix.
+ $ids = array();
+ for ( $i = 0; $i < 20; $i += 1 ) {
+ $id = wp_unique_id( 'foo-' );
+ $this->assertRegExp( '/^foo-\d+$/', $id );
+ $ids[] = $id;
+ }
+ $this->assertEquals( $ids, array_unique( $ids ) );
+ }
+
+ /**
</ins><span class="cx" style="display: block; padding: 0 10px"> * @ticket 40017
</span><span class="cx" style="display: block; padding: 0 10px"> * @dataProvider _wp_get_image_mime
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span></span></pre>
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