andrey Tue Aug 24 18:01:58 2004 EDT
Modified files:
/php-src README.PHP4-TO-PHP5-THIN-CHANGES
Log:
new incompatibilities. maybe someone from the doc group will update the
migrating guide. also Derick may add new slides to his talk :)
http://cvs.php.net/diff.php/php-src/README.PHP4-TO-PHP5-THIN-CHANGES?r1=1.16&r2=1.17&ty=u
Index: php-src/README.PHP4-TO-PHP5-THIN-CHANGES
diff -u php-src/README.PHP4-TO-PHP5-THIN-CHANGES:1.16
php-src/README.PHP4-TO-PHP5-THIN-CHANGES:1.17
--- php-src/README.PHP4-TO-PHP5-THIN-CHANGES:1.16 Sun Mar 28 04:30:21 2004
+++ php-src/README.PHP4-TO-PHP5-THIN-CHANGES Tue Aug 24 18:01:58 2004
@@ -77,20 +77,24 @@
9. get_class() starting PHP 5 returns the name of the class as it was
declared which may lead to problems in older scripts that rely on
- the previous behaviour - the class name is lowercased.
+ the previous behaviour - the class name is lowercased. Expect the
+ same behaviour from get_parent_class() when applicable.
Example :
<?php
class FooBar {
}
+ class ExtFooBar extends FooBar{}
$a = new FooBar();
- var_dump(get_class($a));
+ var_dump(get_class($a), get_parent_class($a));
?>
Output (PHP 4):
string(6) "foobar"
+ string(9) "extfoobar"
Output (PHP 5):
string(6) "FooBar"
+ string(9) "ExtFooBar"
----------------------------------------------------------------------
Example code that will break :
//....
@@ -101,7 +105,51 @@
//...
}
//...
- Possible solution is to search for get_class() in all your scripts and
- use strtolower().
+ Possible solution is to search for get_class() and get_parent_class() in
+ all your scripts and use strtolower().
+
+10. get_class_methods() returns the names of the methods of a class as they
+ declared. In PHP4 the names are all lowercased.
+ Example code :
+ <?php
+ class Foo{
+ function doFoo(){}
+ function hasFoo(){}
+ }
+ var_dump(get_class_methods("Foo"));
+ ?>
+ Output (PHP4):
+ array(2) {
+ [0]=>
+ string(5) "dofoo"
+ [1]=>
+ string(6) "hasfoo"
+ }
+ Output (PHP5):
+ array(2) {
+ [0]=>
+ string(5) "doFoo"
+ [1]=>
+ string(6) "hasFoo"
+ }
+
+11. Assignment $this is impossible. Starting PHP 5.0.0 $this has special
+ meaning in class methods and is recognized by the PHP parser. The latter
+ will generate a parse error when assignment to $this is found
+ Example code :
+ <?php
+ class Foo {
+ function assignNew($obj) {
+ $this = $obj;
+ }
+ }
+ $a = new Foo();
+ $b = new Foo();
+ $a->assignNew($b);
+ echo "I was executed\n";
+ ?>
+ Output (PHP 4):
+ I was executed
+ Output (PHP 5):
+ PHP Fatal error: Cannot re-assign $this in /tmp/this_ex.php on line 4
-
\ No newline at end of file
--
PHP CVS Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
