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How to save a PNG image server-side, from a base64 data string
...rings that this tool generates, into actual PNG files on the server, using PHP.
15 Answers
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How to convert a string to lower case in Bash?
...uby`
Or Perl (probably my favorite):
b=`perl -e "print lc('$a');"`
Or PHP:
b=`php -r "print strtolower('$a');"`
Or Awk:
b=`echo "$a" | awk '{ print tolower($1) }'`
Or Sed:
b=`echo "$a" | sed 's/./\L&/g'`
Or Bash 4:
b=${a,,}
Or NodeJS if you have it (and are a bit nuts...):
b=`e...
What does $$ (dollar dollar or double dollar) mean in PHP?
...
It's a variable's variable.
<?php
$a = 'hello';
$$a = 'world'; // now makes $hello a variable that holds 'world'
echo "$a ${$a}"; // "hello world"
echo "$a $hello"; // "hello world"
?>
...
MySQL ON DUPLICATE KEY - last insert id?
...
It is said that php function mysql_insert_id() returns correct value in both cases: php.net/manual/en/function.mysql-insert-id.php#59718.
– jayarjo
Jun 10 '10 at 13:09
...
Do I have to guard against SQL injection if I used a dropdown?
... {
// Not Expected
}
Then use mysqli_* if you are using a version of php >= 5.3.0 which you should be, to save your result. If used correctly this will help with sql injection.
share
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impr...
How can I get PHPUnit MockObjects to return different values based on a parameter?
I've got a PHPUnit mock object that returns 'return value' no matter what its arguments:
11 Answers
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google oauth2 redirect_uri with several parameters
...t;
stateString = base64UrlEncode('{ "a" : "b" , "c" : 1 }');
This is a PHP example of base64UrlEncoding & decoding (http://en.wikipedia.org/wiki/Base64#URL_applications) :
function base64UrlEncode($inputStr)
{
return strtr(base64_encode($inputStr), '+/=', '-_,');
}
function base64UrlD...
How to exit in Node.js
...hink of Node as the server itself. It isn't just fired up as needed, like PHP is within a web server like Apache. Node doesn't even have to have anything to do with web servers at all! It's just a host for some JavaScript, with some nifty built-in libraries for doing useful things.
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Proper URL forming with Query String and Anchor Hashtag
...may be necessary to submit the page using a
<form action='webpage.php?q=string#tag' method='GET or POST'>
<input type='text' id='q' name='q' value='string'>
<input type='submit' value='submit'>
</form>
rather than just a URL link
<a href='webpage...
Resolve Git merge conflicts in favor of their changes during a pull
...'s, the easiest way is:
git checkout --theirs path/to/the/conflicted_file.php
git add path/to/the/conflicted_file.php
The converse of this (to overwrite the incoming version with your version) is
git checkout --ours path/to/the/conflicted_file.php
git add path/to/the/conflicted_file.php
Surpri...