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[5.4] Add str_after helper function #19357

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Merged
merged 3 commits into from
May 28, 2017
Merged

[5.4] Add str_after helper function #19357

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9b8753a
Add str_after helper function
calebporzio May 26, 2017
98b099e
Fix styling
calebporzio May 26, 2017
4c4810a
Return entire string if search is not found.
calebporzio May 28, 2017
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18 changes: 18 additions & 0 deletions src/Illuminate/Support/Str.php
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,24 @@ class Str
*/
protected static $studlyCache = [];

/**
* Return the remainder of a string after a given value.
*
* @param string $subject
* @param string $search
* @return string
*/
public static function after($subject, $search)
{
if (! static::contains($subject, $search)) {
return '';
}

$searchEndPos = strpos($subject, $search) + static::length($search);
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strpos is single-byte while the rest of the code is utf8 aware.
Therefore you get wrong results with after('é foobarbaz', 'foo')


return static::substr($subject, $searchEndPos, static::length($subject));
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We grab up to the end, so the third parameter should be omitted.
(as more, here it exceeds the end the subject; it works but is erroneous)

}

/**
* Transliterate a UTF-8 value to ASCII.
*
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14 changes: 14 additions & 0 deletions src/Illuminate/Support/helpers.php
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Expand Up @@ -695,6 +695,20 @@ function starts_with($haystack, $needles)
}
}

if (! function_exists('str_after')) {
/**
* Return the remainder of a string after a given value.
*
* @param string $subject
* @param string $search
* @return string
*/
function str_after($subject, $search)
{
return Str::after($subject, $search);
}
}

if (! function_exists('str_contains')) {
/**
* Determine if a given string contains a given substring.
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7 changes: 7 additions & 0 deletions tests/Support/SupportHelpersTest.php
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Expand Up @@ -252,6 +252,13 @@ public function testEndsWith()
$this->assertFalse(Str::endsWith('jason', ['no']));
}

public function testStrAfter()
{
$this->assertEquals('nah', str_after('hannah', 'han'));
$this->assertEquals('nah', str_after('hannah', 'n'));
$this->assertEmpty(str_after('hannah', 'xxxx'));
}

public function testStrContains()
{
$this->assertTrue(Str::contains('taylor', 'ylo'));
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7 changes: 7 additions & 0 deletions tests/Support/SupportStrTest.php
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Expand Up @@ -76,6 +76,13 @@ public function testEndsWith()
$this->assertFalse(Str::endsWith(0.27, '8'));
}

public function testStrAfter()
{
$this->assertEquals('nah', Str::after('hannah', 'han'));
$this->assertEquals('nah', Str::after('hannah', 'n'));
$this->assertEmpty(Str::after('hannah', 'xxxx'));
}

public function testStrContains()
{
$this->assertTrue(Str::contains('taylor', 'ylo'));
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