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Add polyfills for str_contains(), str_starts_with(), str_ends_with() for PHP < 8.0

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This commit is contained in:
Kijin Sung 2022-12-02 15:45:58 +09:00
parent 9acb39a623
commit 928a24fac0
2 changed files with 114 additions and 12 deletions
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83
common/functions.php
View file

@ -280,8 +280,11 @@ function explode_with_escape($delimiter, $str, $limit = 0, $escape_char = '\\')
*/
function starts_with($needle, $haystack, $case_sensitive = true)
{
if (strlen($needle) > strlen($haystack)) return false;
if ($case_sensitive)
if (strlen($needle) > strlen($haystack))
{
return false;
}
elseif ($case_sensitive)
{
return !strncmp($needle, $haystack, strlen($needle));
}
@ -301,14 +304,17 @@ function starts_with($needle, $haystack, $case_sensitive = true)
*/
function ends_with($needle, $haystack, $case_sensitive = true)
{
if (strlen($needle) > strlen($haystack)) return false;
if ($case_sensitive)
if (strlen($needle) > strlen($haystack))
{
return (substr($haystack, -strlen($needle)) === $needle);
return false;
}
elseif ($case_sensitive)
{
return strval($needle) === '' || substr($haystack, -strlen($needle)) === $needle;
}
else
{
return (strtolower(substr($haystack, -strlen($needle))) === strtolower($needle));
return strval($needle) === '' || strtolower(substr($haystack, -strlen($needle))) === strtolower($needle);
}
}
@ -322,7 +328,18 @@ function ends_with($needle, $haystack, $case_sensitive = true)
*/
function contains($needle, $haystack, $case_sensitive = true)
{
return $case_sensitive ? (strpos($haystack, $needle) !== false) : (stripos($haystack, $needle) !== false);
if (strlen($needle) > strlen($haystack))
{
return false;
}
elseif ($case_sensitive)
{
return (strpos($haystack, $needle) !== false);
}
else
{
return (stripos($haystack, $needle) !== false);
}
}
/**
@ -714,12 +731,9 @@ function is_empty_html_content($str)
}
/**
* Check if there is 'is_countable' function (PHP 7.3)
* If there is no 'is_countable' function, define it to check for Countable objects.
* Polyfill for is_countable() in PHP < 7.3
*
* cf. https://wiki.php.net/rfc/is-countable
*
* @param string $str The input string
* @param mixed $var
* @return bool
**/
if (!function_exists('is_countable'))
@ -729,3 +743,48 @@ if (!function_exists('is_countable'))
return is_array($var) || $var instanceof Countable;
}
}
/**
* Polyfill for str_starts_with() in PHP < 8.0
*
* @param string $haystack
* @param string $needle
* @return bool
*/
if (!function_exists('str_starts_with'))
{
function str_starts_with($haystack, $needle)
{
return strval($needle) === '' || strncmp($haystack, $needle, strlen($needle)) === 0;
}
}
/**
* Polyfill for str_starts_with() in PHP < 8.0
*
* @param string $haystack
* @param string $needle
* @return bool
*/
if (!function_exists('str_ends_with'))
{
function str_ends_with($haystack, $needle)
{
return strval($needle) === '' || @substr_compare($haystack, $needle, -strlen($needle), strlen($needle)) === 0;
}
}
/**
* Polyfill for str_starts_with() in PHP < 8.0
*
* @param string $haystack
* @param string $needle
* @return bool
*/
if (!function_exists('str_contains'))
{
function str_contains($haystack, $needle)
{
return strval($needle) === '' || strpos($haystack, $needle) !== false;
}
}

43
tests/unit/functions/FunctionsTest.php
View file

@ -1,5 +1,13 @@
<?php
class CountableTest implements Countable
{
public function count(): int
{
return 42;
}
}
class FunctionsTest extends \Codeception\TestCase\Test
{
public function testArrayFunctions()
@ -74,16 +82,22 @@ class FunctionsTest extends \Codeception\TestCase\Test
$this->assertFalse(starts_with('FOO', 'foobar'));
$this->assertTrue(starts_with('FOO', 'foobar', false));
$this->assertFalse(starts_with('bar', 'foobar'));
$this->assertFalse(starts_with('foobar', 'foo'));
$this->assertTrue(starts_with('', 'foobar'));
$this->assertTrue(ends_with('bar', 'foobar'));
$this->assertFalse(ends_with('BAR', 'foobar'));
$this->assertTrue(ends_with('BAR', 'foobar', false));
$this->assertFalse(ends_with('foo', 'foobar'));
$this->assertFalse(ends_with('foobar', 'bar'));
$this->assertTrue(ends_with('', 'foobar'));
$this->assertTrue(contains('foo', 'foo bar baz rhymix rocks'));
$this->assertFalse(contains('barbaz', 'foo bar baz rhymix rocks'));
$this->assertTrue(contains('RHYMIX', 'foo bar baz rhymix rocks', false));
$this->assertFalse(contains('ROCKS', 'foo bar baz rhymix rocks'));
$this->assertFalse(contains('foobar', 'bar'));
$this->assertTrue(contains('', 'foobar'));
}
public function testRangeFunctions()
@ -188,6 +202,8 @@ class FunctionsTest extends \Codeception\TestCase\Test
$this->assertEquals(3, countobj(array('foo' => 1, 'bar' => 2, 'baz' => 3)));
$this->assertEquals(3, countobj((object)array('foo' => 1, 'bar' => 2, 'baz' => 3)));
$this->assertEquals(1, countobj('foobar'));
$this->assertEquals(42, countobj(new CountableTest));
$this->assertEquals(0, countobj(new stdClass));
}
public function testUTF8Functions()
@ -243,4 +259,31 @@ class FunctionsTest extends \Codeception\TestCase\Test
$this->assertFalse(is_empty_html_content('<p><video src="rickroll.webm" /></p>'));
$this->assertFalse(is_empty_html_content('<p><object></object></p>'));
}
public function testPolyfillFunctions()
{
$this->assertTrue(function_exists('is_countable'));
$this->assertTrue(is_countable(['foo', 'bar']));
$this->assertFalse(is_countable('hello world'));
$this->assertTrue(is_countable(new CountableTest));
$this->assertFalse(is_countable(new stdClass));
$this->assertTrue(function_exists('str_starts_with'));
$this->assertTrue(str_starts_with('foobar', 'foo'));
$this->assertFalse(str_starts_with('Foobar', 'FOO'));
$this->assertFalse(str_starts_with('', 'bar'));
$this->assertTrue(str_starts_with('foobar', ''));
$this->assertTrue(function_exists('str_ends_with'));
$this->assertTrue(str_ends_with('foobar', 'bar'));
$this->assertFalse(str_ends_with('Foobar', 'BAR'));
$this->assertFalse(str_ends_with('', 'bar'));
$this->assertTrue(str_ends_with('foobar', ''));
$this->assertTrue(function_exists('str_contains'));
$this->assertTrue(str_contains('foobarbazz', 'bar'));
$this->assertFalse(str_contains('foobarbazz', 'BAR'));
$this->assertFalse(str_contains('', 'foobar'));
$this->assertTrue(str_contains('foobar', ''));
}
}