Online PHP editor | rfc for ps2G1

@ 2014-09-12T03:28:50Z

<?php

say("strcmp(): Returns < 0 if str1 is less than str2;\n",
 " > 0 if str1 is greater than str2, and 0 if they are equal.\n", 
" http://php.net/manual/en/function.strcmp.php");
 
# basic test
string_lt('a', 'z');


# numeric strings
string_lt('22', '123');


# non-numeric strings
string_lt('bb', 'abc'); 


# non-numeric strings with numbers in
# should be the same as "numeric strings" if strcmp() really does string comparison
string_lt('22x', '123x');


function string_lt($str1, $str2)
{

	# < operator
	if ($str1 < $str2) { say("$str1 < $str2"); }
	if ($str2 < $str1) { say("$str2 < $str1"); } 

	# good old strcmp() 
	if (strcmp($str1, $str2)) { say("$str1 < $str2"); } 
	if ($str2 < $str1) { say("$str2 < $str1"); } 
}

function string_lt_old($str1, $str2)
{
	# you can't use < operator for comparing strings
	# wacky stuff will happen
	$lt_says = ((string) $str1 < (string) $str2); 

	# see what strcmp() says
	
	$strcmp_says = strcmp($str1, $str2);

	echo "$str1 less than $str2; lt_says: $lt_says, strcmp_says: $strcmp_says\n";
}


function say(...$msgs)
{
	foreach ($msgs as $msg)
	{
		echo $msg;
	}
	echo "\n";
}

Output for git.master, git.master_jit, rfc.property-hooks: strcmp(): Returns < 0 if str1 is less than str2; > 0 if str1 is greater than str2, and 0 if they are equal. http://php.net/manual/en/function.strcmp.php a < z a < z 22 < 123 22 < 123 abc < bb bb < abc abc < bb 123x < 22x 22x < 123x 123x < 22x

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2020-03-21 RFC: Is_Literal - declined
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2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
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