svn: /phpdoc/en/trunk/language/ operators.xml

rquadling Wed, 13 Jan 2010 16:12:39 +0000 Revision: http://svn.php.net/viewvc?view=revision&revision=293507 Log: Better fix for #50738 Bug: http://bugs.php.net/50738 (Closed) Unclear documentation in numerical string comparison Changed paths: U phpdoc/en/trunk/language/operators.xml Modified: phpdoc/en/trunk/language/operators.xml =================================================================== --- phpdoc/en/trunk/language/operators.xml 2010-01-13 14:37:21 UTC (rev 293506) +++ phpdoc/en/trunk/language/operators.xml 2010-01-13 16:12:39 UTC (rev 293507) @@ -1096,19 +1096,21 @@ </tgroup> </table> <para> - If you compare an integer with a string, excluding the identical (===) and - not identical (!==) operators, the string is - <link linkend="language.types.string.conversion">converted to a number</link>. - If you compare two numerical strings, they are compared as integers. These - rules also apply to the - <link linkend="control-structures.switch">switch</link> statement. + If you compare a number with a string or the comparison involves numerical + strings,then each string is + <link linkend="language.types.string.conversion">converted to a number</link> + and the comparison performed numerically. These rules also apply to the + <link linkend="control-structures.switch">switch</link> statement. The + type conversion does not take place when the comparison is === or !== as + this involves comparing the type as well as the value. <informalexample> <programlisting role="php"> <![CDATA[ <?php var_dump(0 == "a"); // 0 == 0 -> true var_dump("1" == "01"); // 1 == 1 -> true -var_dump("1" == "1e0"); // 1 == 1 -> true +var_dump("10" == "1e1"); // 10 == 10 -> true +var_dump(100 == "1e2"); // 100 == 100 -> true switch ("a") { case 0: