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How do I convert a PDF document to a preview image in PHP? [closed]
...
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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Most efficient way to make the first character of a String lower case?
... are operations per second, the more the better.
Tests
test1 was first Andy's and Hllink's approach:
string = Character.toLowerCase(string.charAt(0)) + string.substring(1);
test2 was second Andy's approach. It is also Introspector.decapitalize() suggested by Daniel, but without two if statemen...
How do I auto-hide placeholder text upon focus using css or jquery?
...input type="text" placeholder="Type something here!">
Firefox 15 and IE 10+ also supports this now. To expand on Casey Chu's CSS solution:
input:focus::-webkit-input-placeholder { color:transparent; }
input:focus:-moz-placeholder { color:transparent; } /* FF 4-18 */
input:focus::-moz-plac...
Ignoring accented letters in string comparison
I need to compare 2 strings in C# and treat accented letters the same as non-accented letters. For example:
6 Answers
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How to add http:// if it doesn't exist in the URL?
...//" . $url;
}
return $url;
}
Recognizes ftp://, ftps://, http:// and https:// in a case insensitive way.
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What do all of Scala's symbolic operators mean?
...e method defined on List (though it could be the object of the same name), and :+= is probably the method defined on various Buffer classes.
So, let's see them.
Keywords/reserved symbols
There are some symbols in Scala that are special. Two of them are considered proper keywords, while others are...
How do I check if a number evaluates to infinity?
...lert(x === Infinity); displays "true". (Admittedly that's an obscure case, and anyone who decides to redefine Infinity, NaN etc should expect odd things to happen.)
– LukeH
Jan 18 '11 at 13:49
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How to center a button within a div?
...r, however Flexbox would be the correct approach now.
Live Demo
Vertical and horizontal alignment.
#wrapper {
display: flex;
align-items: center;
justify-content: center;
}
Just horizontal (as long as the main flex axis is horizontal which is default)
#wrapper {
display: flex;
justif...
How to allow remote connection to mysql
I have installed MySQL Community Edition 5.5 on my local machine and I want to allow remote connections so that I can connect from external source.
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Label encoding across multiple columns in scikit-learn
I'm trying to use scikit-learn's LabelEncoder to encode a pandas DataFrame of string labels. As the dataframe has many (50+) columns, I want to avoid creating a LabelEncoder object for each column; I'd rather just have one big LabelEncoder objects that works across all my columns of data. ...