colder Mon Apr 30 17:02:29 2007 UTC
Modified files:
/phpdoc/en/language operators.xml
Log:
Fix #41228 (Mention short-circuit property of some logical operators)
http://cvs.php.net/viewvc.cgi/phpdoc/en/language/operators.xml?r1=1.112&r2=1.113&diff_format=u
Index: phpdoc/en/language/operators.xml
diff -u phpdoc/en/language/operators.xml:1.112
phpdoc/en/language/operators.xml:1.113
--- phpdoc/en/language/operators.xml:1.112 Fri Mar 23 14:09:51 2007
+++ phpdoc/en/language/operators.xml Mon Apr 30 17:02:28 2007
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.112 $ -->
+<!-- $Revision: 1.113 $ -->
<chapter id="language.operators">
<title>Operators</title>
<simpara>
@@ -997,6 +997,39 @@
<link linkend="language.operators.precedence">Operator
Precedence</link>.)
</simpara>
+ <example>
+ <title>Logical operators illustrated</title>
+ <programlisting role="php">
+<![CDATA[
+<?php
+
+// foo() will never get called as those operators are short-circuit
+$a = (false && foo());
+$b = (true || foo());
+$c = (false and foo());
+$d = (true or foo());
+
+// "||" has a greater precedence than "or"
+$e = false || true; // $e will be assigned to (false || true) which is true
+$f = false or true; // $f will be assigned to false
+var_dump($e, $f);
+
+// "&&" has a greater precedence than "and"
+$g = true && false; // $g will be assigned to (true && false) which is false
+$h = true and false; // $h will be assigned to true
+var_dump($g, $h);
+]]>
+ </programlisting>
+ &example.outputs.similar;
+ <screen>
+<![CDATA[
+bool(true)
+bool(false)
+bool(false)
+bool(true)
+]]>
+ </screen>
+ </example>
</sect1>
<sect1 id="language.operators.string">
