jyapayne/swig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

[php] Update docs about undefined constants

Browse source 
PHP 7.2 made these a warning instead of just a notice, and apparently it
will throw an Error in a future version of PHP.
This commit is contained in:
Olly Betts 2019-05-22 11:13:55 +12:00
commit e87811223c
1 changed files with 7 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

13
Doc/Manual/Php.html
View file

@ -231,10 +231,12 @@ echo "E = " . E . "\n";
<p>
There's one peculiarity of how constants work in PHP which it is useful
to note (this is not specific to SWIG though) - if you try to use an undeclared
constant, PHP will emit a notice and then expand the constant to a string
version of the constant's name. Unfortunately it is easy to miss the notice
if you're using PHP in a webserver, as it will probably end up in error.log or
similar.
constant, PHP will emit a warning (or a notice in PHP 7.1 and earlier) and then
expand the constant to a string version of the constant's name. Unfortunately
it is easy to miss the warning message if you're using PHP in a webserver as
it will probably end up in error.log or similar. Apparently this will throw
an Error in a future version of PHP, but until then it's something to be
aware of.
</p>
<p>
@ -268,8 +270,7 @@ if(EASY_TO_MISPEL) {
<p>
The mis-spelled constant will become the string 'EASY_TO_MISPEL', which
is treated as true by the if test, when the value of the intended constant
would be treated as false! Modern versions of PHP will at least issue
a PHP notice by default when this happens.
would be treated as false!
</p>
<H3><a name="Php_nn2_2">31.2.2 Global Variables</a></H3>