BaseReader called `isValidFormat` despite it doesn't require it to be
implemented. Instead we replaced `isValidFormat` by a proper implementation
of `canRead` in each classes. This also remove the semantic amibguity between
those two methods.
FIX#32
This is to fix the situation when cells merged vertically are ignored in columns auto size calculations.
I also removed $calculateMergeCells param as it wasn't used and I believe the only situation when you
want to calculate the width of merged columns has been covered here (and there's no reason to not calculate it).
FIX#46
Some references to classes were incorrectly assumed to be a reference
to self, whereas they were references to classes in global namespace
outside of this project.
FIX#37
GD is implicitly required for saving images anyway, this exception when
it's not loaded simply gives more information on what to do if the
execution flow reaches a places that depends on a function from GD.
```php
<?php
$array = array(
'str' => 'foo',
'num' => 12345,
'null' => NULL,
);
print intval(isset($array['null'])) . PHP_EOL;
print intval(array_key_exists($array['null'])) . PHP_EOL;
print intval(isset($array['num'])) . PHP_EOL;
print intval(array_key_exists($array['num'])) . PHP_EOL;
print intval(isset($array['str'])) . PHP_EOL;
print intval(array_key_exists($array['str'])) . PHP_EOL;
```
Only for this special case, you need array_key_exists(), else avoid it as it is
painfully slow and hurts your performance.
Signed-off-by: Roland Häder <roland@mxchange.org>
Remove the term "hack" from the source code to prevent it
from being flagged by malware scanners and audit tools (such as
the very popular myJoomla.com for Joomla sites)
Remove the term "hacked by" from the source code to prevent it
from being flagged by malware scanners and audit tools (such as
the very popular myJoomla.com for Joomla sites)
If a sheet name included an apostrophe and the sheet had print area
defined then the spreadsheet could not be saved because the cell
coordinates were mangled, eg:
'Fiche d''action'!$A$1:$N$19
wrongly became:
'Fiche d'$A$1:$N$19
This introduce a helper class that should be used to log things,
avoiding a lot of boilerplate code.
Also all output are made in /tmp folder instead of beside the script
itself. This is because there is a high chance that the folder containing
the script is not writtable by webserver. So using the /tmp folder
makes it more likely to works in a variety of setup.
Yii framework v1.1 has it's own autoloader and its autoloader throws
an error, when it can't find class. When this library initializes, it
register its own autoloader, but places it at the end of autoload
queue. So when I use library with Yii 1.1, I just face an error:
`include(PHPExcel_Shared_String.php): failed to open stream: No such file or directory`
because Yii's autoloader runs first and tries to include class file
directly.
Registering our autoloader first avoid this.
