jimw Thu Dec 20 15:23:48 2001 EDT
Modified files:
/phpdoc/en/functions array.xml
Log:
range: provide examples of generating decrementing arrays and character ranges using
array_reverse and array_map
Index: phpdoc/en/functions/array.xml
diff -u phpdoc/en/functions/array.xml:1.138 phpdoc/en/functions/array.xml:1.139
--- phpdoc/en/functions/array.xml:1.138 Thu Dec 20 15:14:32 2001
+++ phpdoc/en/functions/array.xml Thu Dec 20 15:23:48 2001
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.138 $ -->
+<!-- $Revision: 1.139 $ -->
<reference id="ref.array">
<title>Array Functions</title>
<titleabbrev>Arrays</titleabbrev>
@@ -3137,9 +3137,10 @@
<function>range</function> returns an array of elements from
<parameter>low</parameter> to <parameter>high</parameter>,
inclusive. If low > high, the sequence will be from high to low.
- <example>
- <title><function>range</function> examples</title>
- <programlisting role="php">
+ </para>
+ <example>
+ <title><function>range</function> examples</title>
+ <programlisting role="php">
<![CDATA[
foreach(range(0, 9) as $number) {
echo $number;
@@ -3151,15 +3152,30 @@
echo $letter;
}
]]>
- </programlisting>
- </example>
- </para>
+ </programlisting>
+ </example>
<note>
<para>
Prior to version 4.1.0 the <function>range</function> function
only generated incrementing integer arrays. Support for
character sequences and decrementing arrays was added in 4.1.0.
</para>
+ <example>
+ <title>Simulating decrementing ranges and character sequences</title>
+ <programlisting role="php">
+<![CDATA[
+# array_reverse can be used to flip the order of a range
+foreach(array_reverse(range(0,9)) as $number) {
+ echo $number;
+}
+
+# array_map() can be used to turn integers into characters using chr()
+foreach(array_map('chr', range(ord('a'),ord('z'))) as $character) {
+ echo $character;
+}
+]]>
+ </programlisting>
+ </example>
</note>
<para>
See <function>shuffle</function> for another example of its use.
