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PHP/Utility Function/range - История изменений
2026-04-04T07:25:01Z
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http://wbex.ru/index.php?title=PHP/Utility_Function/range&diff=1486&oldid=prev
в 10:37, 26 мая 2010
2010-05-26T10:37:32Z
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http://wbex.ru/index.php?title=PHP/Utility_Function/range&diff=1487&oldid=prev
Admin: 1 версия
2010-05-26T07:07:57Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==If your low parameter (parameter one) is higher than your high parameter (parameter two), you get an array counting down, like this:==<br />
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<!-- start source code --><br />
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<source lang="html4strict"><br />
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<?<br />
$questions = range(100, 0, 10);<br />
// gives 100, 90, 80, 70, 60, 50, 40, 30, 20, 10, 0<br />
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==Initializing an Array As a Range or Sequence of Values: array range(mixed $start, mixed $end[, mixed $step])==<br />
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<!-- start source code --><br />
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<source lang="html4strict"><br />
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<?php <br />
function array_list($array) { <br />
printf("<p>(%s)</p>\n", implode(", ", $array) ); <br />
} <br />
$arr1 = range(5, 11); <br />
array_list($arr1); <br />
$arr2 = range(0, -5);<br />
array_list($arr2); <br />
$arr3 = range(3, 15, 3);<br />
array_list($arr3); <br />
array_list( range(20, 0, -5) ); <br />
array_list( range(2.4, 3.1, .1) ); <br />
array_list( range("a", "f") ); <br />
array_list( range("M", "A", -2) ); <br />
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==range( ) function creates an array of numbers between a low value and a high value.==<br />
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<!-- start source code --><br />
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<source lang="html4strict"><br />
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Get an array of the sequential numbers between 1 and 40 (inclusive)<br />
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$numbers = range(1,40);<br />
print_r($numbers);<br />
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==range( ) function has a third parameter that allows you specify a step amount in the range.==<br />
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<!-- start source code --><br />
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<source lang="html4strict"><br />
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//array range ( mixed low, mixed high [, number step] )<br />
<?<br />
$questions = range(1, 10, 2);<br />
// gives 1, 3, 5, 7, 9<br />
$questions = range(1, 10, 3)<br />
// gives 1, 4, 7, 10<br />
$questions = range(10, 100, 10);<br />
// gives 10, 20, 30, 40, 50, 60, 70, 80, 90, 100<br />
$float = range(1, 10, 1.2);<br />
// gives 1, 2.2, 3.4, 4.6, 5.8, 7, 8.2, 9.4<br />
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</source><br />
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==Use range( ) to create arrays of characters, like this:==<br />
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<!-- start source code --><br />
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<source lang="html4strict"><br />
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<?<br />
$questions = range("a", "z", 1);<br />
// gives a, b, c, d, ..., x, y, z<br />
$questions = range("z", "a", 2);<br />
// gives z, x, v, t, ..., f, d, b<br />
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</source></div>
Admin