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==Comparing strings with strcmp()==



<source lang="html4strict">

<?
$x = strcmp("x54321","x5678");
if ($x > 0) {
print ""x54321" is greater than the string "x5678".";
} elseif ($x < 0) {
print ""x54321" is less than the string "x5678".";
}
$x = strcmp("54321","5678");
if ($x > 0) {
print ""54321" is greater than the string "5678".";
} elseif ($x < 0) {
print ""54321" is less than the string "5678".";
}
$x = strcmp("6 p","55 c");
if ($x > 0) {
print ""6 p" is greater than than the string "55 c".";
} elseif ($x < 0) {
print ""6 p" is less than the string "55 c".";
}
$x = strcmp("6 pack",55);
if ($x > 0) {
print "The string "6 pack" is greater than the number 55.";
} elseif ($x < 0) {
print "The string "6 pack" is less than the number 55.";
}
?>

</source>

==For example, using my collation rules (Canadian-English), I obtain the following results:==



<source lang="html4strict">

echo strcmp ("Apple", "Banana"); // returns < 0
echo strcmp ("apple", "Apple"); // returns > 0
echo strcmp ("1", "test"); // returns < 0

</source>

==int strcmp ( string str1, string str2 ), case-insensitive sibling, strcasecmp( )==



<source lang="html4strict">

<?
$string1 = "foo";
$string2 = "bar";
$result = strcmp($string1, $string2);
switch ($result) {
case -1: print "Foo comes before bar"; break;
case 0: print "Foo and bar are the same"; break;
case 1: print "Foo comes after bar"; break;
}
?>

</source>

==strcmp() function performs a case-sensitive comparison of two strings.==



<source lang="html4strict">

Its syntax follows: int strcmp (string string1, string string2)
strcmp() returns one of three possible values:
0 if string1 and string2 are equal
< 0 if string1 is less than string2
> 0 if string2 is less than string1
<?
$string1 = "butter";
$string2 = "butter";
if ((strcmp($string1, $string2)) == 0) :
print "Strings are equivalent!";
endif;
?>

</source>

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в 10:37, 26 мая 2010

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