Online PHP editor | rfc for ZeLCf

@ 2015-11-02T06:56:02Z

<?php

//----------------------------------
// array_unique() semi-replacements
//----------------------------------

// @link http://php.net/manual/en/function.array-unique.php#98453
function wp_array_unique1( $arr = array() )
{
	$tmp = array(); 
    foreach( $arr as $key => $val ) {    
        $tmp[$val] = true; 
    } 
    return array_keys( $tmp ); 
}	 

// @link http://www.puremango.co.uk/2010/06/fast-php-array_unique-for-removing-duplicates/#comment-202704
function wp_array_unique2( $arr = array() )
{
	$tempArray = array();
	foreach($arr as $key => $val ) {
		if( isset( $tempArray[$val] ) ) continue;
		$tempArray[$val] = $key;
	}
	return array_flip($tempArray);
}

// @link http://stackoverflow.com/questions/8321620/array-unique-vs-array-flip
function wp_array_unique3( $arr = array() )
{
	// Code documented at: http://www.puremango.co.uk/?p=1039
	return array_flip(array_flip(array_reverse($arr,true)));
}

// @link http://stackoverflow.com/questions/8321620/array-unique-vs-array-flip
function wp_array_unique4( $arr = array() )
{
	return array_keys( array_flip( $arr ) );
}

// @link http://stackoverflow.com/questions/8321620/array-unique-vs-array-flip
function wp_array_unique5( $arr = array() )
{
	return array_flip( array_flip( $arr ) );
}

//----------
// Input
//----------
$input = array( 
    0 => 1,
    1 => 2,
    2 => 2,
    3 => 0,
    4 => -1,
    5 => '',
    6 => null,
    7 => 'Test',
    8 => 0.1,
    9 => '1',
    'a' => 'c',
    'b' => 'a',
    'c' => 'c'
);

//-------------------
// Test comparisions
//-------------------
echo 'Input:';
print_r( $input );
echo 'array_unique: ';
print_r( array_unique( $input ) );
echo 'Replacement #1: ';
print_r( wp_array_unique1( $input ) );
echo 'Replacement #2: ';
print_r( wp_array_unique2( $input ) );
echo 'Replacement #3: ';
print_r( wp_array_unique3( $input ) );
echo 'Replacement #4: ';
print_r( wp_array_unique4( $input ) );
echo 'Replacement #5: ';
print_r( wp_array_unique5( $input ) );

Output for git.master, git.master_jit, rfc.property-hooks: Input:Array ( [0] => 1 [1] => 2 [2] => 2 [3] => 0 [4] => -1 [5] => [6] => [7] => Test [8] => 0.1 [9] => 1 [a] => c [b] => a [c] => c ) array_unique: Array ( [0] => 1 [1] => 2 [3] => 0 [4] => -1 [5] => [7] => Test [8] => 0.1 [a] => c [b] => a ) Replacement #1: Deprecated: Implicit conversion from float 0.1 to int loses precision in /in/ZeLCf on line 12 Array ( [0] => 1 [1] => 2 [2] => 0 [3] => -1 [4] => [5] => Test [6] => c [7] => a ) Replacement #2: Deprecated: Implicit conversion from float 0.1 to int loses precision in /in/ZeLCf on line 22 Array ( [0] => 1 [1] => 2 [3] => 0 [4] => -1 [5] => [7] => Test [a] => c [b] => a ) Replacement #3: Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/ZeLCf on line 32 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/ZeLCf on line 32 Array ( [a] => c [b] => a [0] => 1 [7] => Test [5] => [4] => -1 [3] => 0 [1] => 2 ) Replacement #4: Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/ZeLCf on line 38 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/ZeLCf on line 38 Array ( [0] => 1 [1] => 2 [2] => 0 [3] => -1 [4] => [5] => Test [6] => c [7] => a ) Replacement #5: Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/ZeLCf on line 44 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/ZeLCf on line 44 Array ( [9] => 1 [2] => 2 [3] => 0 [4] => -1 [5] => [7] => Test [c] => c [b] => a )

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

preferences:dark modelive preview