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PHP Pass by reference in foreach [duplicate]
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146
Because on the second loop, $v is still a reference to the last array item, so it's overwritte...
Make a negative number positive
...ers. However, I want any negatives numbers to be treated as positives. So (1)+(2)+(1)+(-1) should equal 5.
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How to check if mysql database exists
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How do I list one filename per output line in Linux?
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Use the -1 option (note this is a "one" digit, not a lowercase letter "L"), like this:
ls -1a
First, though, make sure your ls supports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use...
Using querySelector with IDs that are numbers
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109
It is valid, but requires some special handling. From here: http://mathiasbynens.be/notes/css...
Show a number to two decimal places
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1171
You can use number_format():
return number_format((float)$number, 2, '.', '');
Example:
$...
Rails formatting date
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Use
Model.created_at.strftime("%FT%T")
where,
%F - The ISO 8601 date format (%Y-%m-%d)
%T - 24-hour time (%H:%M:%S)
Following are some of the frequently used useful list of Date and Time formats that you could specify in strftime method:
Date (Year, Month, Day):
%Y - Year with cent...
How do I execute a Git command without being in the repository?
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106
Try:
git --git-dir=/home/repo/.git log
It is important to give the path all the way up to t...