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Try to open the same text file in another editor on iOS - even the built-in Notes app - and you will see that Textastic actually handles large files fairly well compared to other editors.


In order to support this, I would have to completely rewrite the editor to only map those parts of the file into memory that are currently displayed instead of loading and analyzing the whole file. I'm not going to do that, sorry. 

Sorry, a 5 MB is too large to syntax highlight on the iPad - especially on a first generation device. The iPad has no concept of virtual memory, so it's quickly running out of memory and crashing as a result.
Textastic hat keinen PHP-Interpreter und zeigt daher die PHP-Tags wie reguläres HTML an.

Für eine Vorschau von PHP-Dateien müssen Sie die Datei auf einen Server mit PHP-Unterstützung laden und z.B. in Safari die Remote-URL einsehen.
This is implemented in Textastic 3.2
You can use the TextMate bundle at https://github.com/textmate/restructuredtext.tmbundle

Have a look at the manual to see how you can add it: http://www.textasticapp.com/v3/manual/lessons/How_can_I_add_my_own_syntax_definitions_and_themes.html
I would have to implement my own debugging console or change Firebug lite to properly work with the iPad's touch interface before I could add it to Textastic. That's why I didn't add it to Textastic yet.
Hello,

it's possible to use Firebug lite in Textastic: http://getfirebug.com/firebuglite

The problem is, that its user interface doesn't work particularly well on a touch screen. But it's definitely usable.
Just tap on the blue arrow on the right side of a connection to edit the FTP settings.