svn: /phpdoc/en/trunk/language/types/ string.xml

frozenfire Sat, 13 Nov 2010 03:46:44 +0000 Revision: http://svn.php.net/viewvc?view=revision&revision=305306 Log: Cleaned up simple string variable parsing example, as per bug #53254. Bug: http://bugs.php.net/53254 (Assigned) Strings variable parsing - misplaced examples Changed paths: U phpdoc/en/trunk/language/types/string.xml Modified: phpdoc/en/trunk/language/types/string.xml =================================================================== --- phpdoc/en/trunk/language/types/string.xml 2010-11-13 03:13:40 UTC (rev 305305) +++ phpdoc/en/trunk/language/types/string.xml 2010-11-13 03:46:44 UTC (rev 305306) @@ -513,14 +513,20 @@ <programlisting role="php"> <![CDATA[ <?php -$beer = 'Heineken'; -echo "$beer's taste is great"; // works; "'" is an invalid character for variable names -echo "He drank some $beers"; // won't work; 's' is a valid character for variable names but the variable is "$beer" -echo "He drank some ${beer}s"; // works -echo "He drank some {$beer}s"; // works +$juice = "apple"; + +echo "He drank some $juice juice.".PHP_EOL; +echo "He drank some juice made of $juices."; // Invalid. "s" is a valid character for a variable name, but the variable is $juice. ?> ]]> </programlisting> + &example.outputs; + <screen> +<![CDATA[ +He drank some apple juice. +He drank some juice made of . +]]> + </screen> </informalexample> <simpara> @@ -530,49 +536,48 @@ object properties as to simple variables. </simpara> - <informalexample> + <example><title>Simple syntax example</title> <programlisting role="php"> <![CDATA[ <?php -// These examples are specific to using arrays inside of strings. -// When outside of a string, always quote array string keys and do not use -// {braces}. +$juices = array("apple", "orange", "koolaid1" => "purple"); -// Show all errors -error_reporting(E_ALL); +echo "He drank some $juices[0] juice.".PHP_EOL; +echo "He drank some $juices[1] juice.".PHP_EOL; +echo "He drank some juice made of $juice[0]s.".PHP_EOL; +echo "He drank some $juices[koolaid1] juice.".PHP_EOL; -$fruits = array('strawberry' => 'red', 'banana' => 'yellow'); +class people { + public $john = "John Smith"; + public $jane = "Jane Smith"; + public $robert = "Robert Paulsen"; + + public $smith = "Smith"; +} -// Works, but note that this works differently outside a string -echo "A banana is $fruits[banana]."; +$people = new people(); -// Works -echo "A banana is {$fruits['banana']}."; - -// Works, but PHP looks for a constant named banana first, as described below. -echo "A banana is {$fruits[banana]}."; - -// Won't work, use braces. This results in a parse error. -echo "A banana is $fruits['banana']."; - -// Works -echo "A banana is " . $fruits['banana'] . "."; - -// Works -echo "This square is $square->width meters broad."; - -// Won't work. For a solution, see the complex syntax. -echo "This square is $square->width00 centimeters broad."; +echo "$people->john drank some $juices[0] juice.".PHP_EOL; +echo "$people->john then said hello to $people->jane.".PHP_EOL; +echo "$people->john's wife greeted $people->robert.".PHP_EOL; +echo "$people->robert greeted the two $people->smiths."; ?> ]]> -<!-- XXX this won't work: -echo "This square is $square->{width}00 centimeters broad."; -// XXX: php developers: it would be consequent to make this work. -// XXX: like the $obj->{expr} syntax outside a string works, -// XXX: analogously to the ${expr} syntax for variable var's. ---> </programlisting> - </informalexample> + &example.outputs; + <screen> +<![CDATA[ +He drank some apple juice. +He drank some orange juice. +He drank some juice made of s. +He drank some purple juice. +John Smith drank some apple juice. +John Smith then said hello to Jane Smith. +John Smith's wife greeted Robert Paulsen. +Robert Paulsen greeted the two . +]]> + </screen> + </example> <simpara> For anything more complex, you should use the complex syntax.