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How do I convert a PDF document to a preview image in PHP? [closed]
...n conjunction with GhostScript. Run the ghostscript command with exec() to convert a PDF to JPG, and manipulate the resulting file with imagecreatefromjpeg().
Run the ghostscript command:
exec('gs -dSAFER -dBATCH -sDEVICE=jpeg -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r300 -sOutputFile=whatever.jp...
Compare two dates with JavaScript
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The easiest way to compare dates in javascript is to first convert it to a Date object and then compare these date-objects.
Below you find an object with three functions:
dates.compare(a,b)
Returns a number:
-1 if a < b
0 if a = b
1 if a > b
NaN if a or b is an illegal da...
How do I convert an NSString value to NSData?
How do I convert an NSString value to NSData ?
11 Answers
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Convert UTC datetime string to local datetime
I've never had to convert time to and from UTC. Recently had a request to have my app be timezone aware, and I've been running myself in circles. Lots of information on converting local time to UTC, which I found fairly elementary (maybe I'm doing that wrong as well), but I can not find any informat...
error: ‘NULL’ was not declared in this scope
..., which is implemented in GCC since version 4.6. nullptr is not implicitly convertible to integral types, so it can be used to disambiguate a call to a function which has been overloaded for both pointer and integral types:
void f(int x);
void f(void * ptr);
f(0); // Passes int 0.
f(nullptr); //...
What's the Linq to SQL equivalent to TOP or LIMIT/OFFSET?
...d to a property name.
See http://blogs.msdn.com/vbteam/archive/2008/01/08/converting-sql-to-linq-part-7-union-top-subqueries-bill-horst.aspx for more detail.
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Convert line-endings for whole directory tree (Git)
...esn't specify what its behavior is if you invoke it on binary files. If it converts CRLF in binary files, it will corrupt them. See my answer for a safer, albeit longer alternative.
– toolbear
Sep 23 '11 at 19:11
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How to convert all text to lowercase in Vim
How do you convert all text in Vim to lowercase? Is it even possible?
10 Answers
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Cannot add or update a child row: a foreign key constraint fails
...roblem, thanks for the tip. Here's a link to MySQL documentation on how to convert tables from MyISAM to InnoDB dev.mysql.com/doc/refman/5.7/en/… TLDR: ALTER TABLE table_name ENGINE=InnoDB;
– Guilherme Vaz
Sep 25 '17 at 20:41
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How to convert IEnumerable to ObservableCollection?
How to convert IEnumerable to ObservableCollection ?
5 Answers
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