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How do I convert a PDF document to a preview image in PHP? [closed]
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You need ImageMagick and GhostScript
<?php
$im = new imagick('file.pdf[0]');
$im->setImageFormat('jpg');
header('Content-Type: image/jpeg');
echo $im;
?>
The [0] means page 1.
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Keyboard shortcut for Jump to Previous View Location (Navigate back/forward) in IntelliJ IDEA
...(the Recently Edited Files pop-up).
Mac users, replace Ctrl with ⌘ (command) and Alt with ⌥ (option).
Update In v12.0 it's Alt + Shift +← (Left Arrow) instead of Alt + Ctrl + ← (Left Arrow).
Update 2 In v14.1 (and possibly earlier) it's Ctrl + [
Update 3 In IntelliJ IDEA 2016.3 it's C...
Python “extend” for a dictionary
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a.update(b)
Latest Python Standard Library Documentation
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Rename specific column(s) in pandas
...' else x for x in df.columns]
Or, construct a mapping using a dictionary and perform the list-comprehension with it's get operation by setting default value as the old name:
col_dict = {'gdp': 'log(gdp)', 'cap': 'cap_mod'} ## key→old name, value→new name
df.columns = [col_dict.get(x, x) fo...
Node.js get file extension
...ers after the last dot, so file names like app.css.gz will only return .gz and not .css.gz, which may or may not be what you want.
– xentek
Feb 23 '14 at 6:21
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html onchange event not working
...I still need to press the submit button to make it work. I read about AJAX and I am thinking to learn about this. Do I still need AJAX to make it work or is simple JavaScript enough? Please help.
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Why does Eclipse automatically add appcompat v7 library support whenever I create a new project?
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As stated in Android's Support Library Overview, it is considered good practice to include the support library by default because of the large diversity of devices and the fragmentation that exists between the different versions of Androi...
How to add Web API to an existing ASP.NET MVC 4 Web Application project?
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I upgraded a project from MVC3 to 4 as well and also needed to add a reference to System.Web.Http.
– Damien Sawyer
Oct 16 '12 at 22:16
3
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Activity has leaked window that was originally added
What is this error, and why does it happen?
40 Answers
40
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How to set timeout on python's socket recv method?
...the socket no non-blocking? I don't think that matters to the select call (and it blocks until a descriptor can be read or the timeout expires in this case) and the recv() won't block if the select is satisfied. I tried it using recvfrom() and it seems to work correctly without setblocking(0).
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