mirror of
https://github.com/php/php-src.git
synced 2024-09-22 02:17:32 +00:00
58a52b1641
- Added new entry about get_class() (Thanks Lukas for reminding (toStudlyCapOrNotToStudlyCap.txt).
107 lines
3.4 KiB
Plaintext
107 lines
3.4 KiB
Plaintext
1. strrpos() and strripos() now use the entire string as a needle. Be aware
|
|
that the existing scripts may no longer work as you expect.
|
|
|
|
EX :
|
|
<?php
|
|
var_dump(strrpos("ABCDEF","DEF"));
|
|
var_dump(strrpos("ABCDEF","DAF"));
|
|
?>
|
|
|
|
Will give you different results. The former returns 3 while the latter
|
|
returns false rather than the position of the last occurrence of 'D'.
|
|
The same applies to strripos().
|
|
|
|
2. Illegal use of string offsets causes E_ERROR instead of E_WARNING.
|
|
|
|
EX :
|
|
<?php
|
|
$a = "foo";
|
|
unset($a[0][1][2]);
|
|
?>
|
|
|
|
Fatal error: Cannot use string offset as an array in ... on line 1
|
|
|
|
3. array_merge() was changed to accept only arrays. If a non-array variable is
|
|
passed, a E_WARNING will be thrown for every such parameter. Be careful
|
|
because your code may start emitting E_WARNING out of the blue.
|
|
|
|
4. Be careful when porting from ext/mysql to ext/mysqli. The following
|
|
functions return NULL when no more data is available in the result set
|
|
(ext/mysql's functions return FALSE).
|
|
|
|
- mysqli_fetch_row()
|
|
- mysqli_fetch_array()
|
|
- mysqli_fetch_assoc()
|
|
|
|
5. PATH_TRANSLATED server variable is no longer set implicitly under
|
|
Apache2 SAPI in contrast to the situation in PHP 4, where it is set to the
|
|
same value as the SCRIPT_FILENAME server variable when it is not populated
|
|
by Apache. This change was made to comply with the CGI specification.
|
|
Please refer to bug #23610 for further information.
|
|
|
|
6. Starting PHP 5.0.0 the T_ML_CONSTANT constant is no longer defined by the
|
|
ext/tokenizer extension. If error_reporting is set to E_ALL notices will
|
|
be produced. Instead of T_ML_CONSTANT for /* */ the T_COMMENT constant
|
|
is used, thus both // and /* */ are resolved as the T_COMMENT constant.
|
|
However the PHPDoc style comments /** */ ,which starting PHP 5 are parsed
|
|
by PHP, are recongnized as T_DOC_COMMENT.
|
|
|
|
7. $_SERVER should be populated with argc and argv if variables_order
|
|
includes "S". If you have specifically configured your system to not
|
|
create $_SERVER, then of course it shouldn't be there. The change was to
|
|
always make argc and argv available in the CLI version regardless of the
|
|
variables_order setting. As in, the CLI version will now always populate
|
|
the global $argc and $argv variables.
|
|
|
|
8. In some cases classes must be declared before used. It only happens only
|
|
if some of the new features of PHP 5 are used. Otherwise the behaviour is
|
|
the old.
|
|
Example 1 (works with no errors):
|
|
<?php
|
|
$a = new a();
|
|
class a {
|
|
}
|
|
?>
|
|
|
|
Example 2 (throws an error):
|
|
<?php
|
|
$a = new a();
|
|
interface b{
|
|
}
|
|
class a implements b {
|
|
}
|
|
?>
|
|
|
|
Output (example 2) :
|
|
Fatal error: Class 'a' not found in /tmp/cl.php on line 2
|
|
|
|
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.
|
|
Example :
|
|
<?php
|
|
class FooBar {
|
|
}
|
|
$a = new FooBar();
|
|
var_dump(get_class($a));
|
|
?>
|
|
|
|
Output (PHP 4):
|
|
string(6) "foobar"
|
|
|
|
Output (PHP 5):
|
|
string(6) "FooBar"
|
|
----------------------------------------------------------------------
|
|
Example code that will break :
|
|
//....
|
|
function someMethod($p) {
|
|
if (get_class($p) != 'helpingclass') {
|
|
return FALSE;
|
|
}
|
|
//...
|
|
}
|
|
//...
|
|
Possible solution is to search for get_class() in all your scripts and
|
|
use strtolower().
|
|
|
|
|