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How do I check if a string is a number (float)?
...r.
I'm not sure that anything much could be faster than the above. It calls the function and returns. Try/Catch doesn't introduce much overhead because the most common exception is caught without an extensive search of stack frames.
The issue is that any numeric conversion function has two kin...
Shell command to sum integers, one per line?
...ter, but that was very handy for piping some memory numbers through paste & then bc.
– Michael H.
Sep 8 '10 at 5:34
75
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PostgreSQL disable more output
...l
You can redirect both stdout and stderr with:
psql db -f sql.sql >&/dev/null
but I don't recommend that, as it'll throw away error information that might warn you something isn't going right. You're also producing results and throwing them away, which is inefficient; you're better off ...
Why is Magento so slow? [closed]
...but it means anytime a model, helper, or controller is instantiated, extra PHP instructions need to run to determine if an original class file or an override class files is needed. This adds up.
Besides the layout system, Magento's template system involves a lot of recursive rendering. This adds u...
How can I change my Cygwin home folder after installation?
...g the new Windows Security model to POSIX mappings.
[[ -f /etc/passwd ]] && mv /etc/passwd /etc/passwd.bak
[[ -f /etc/group ]] && mv /etc/group /etc/group.bak
The /etc/nsswitch.conf file's db_home: setting defines how Cygwin fetches the user's home directory. The default setting f...
SQL injection that gets around mysql_real_escape_string()
...et_charset() / $mysqli->set_charset() / PDO's DSN charset parameter (in PHP ≥ 5.3.6)
OR
Don't use a vulnerable character set for connection encoding (you only use utf8 / latin1 / ascii / etc)
You're 100% safe.
Otherwise, you're vulnerable even though you're using mysql_real_escape_string().....
scala vs java, performance and memory? [closed]
...appropriate comparison web page is - shootout.alioth.debian.org/u64q/scala.php
– igouy
May 6 '11 at 15:08
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show 4 more comments
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file_put_contents(meta/services.json): failed to open stream: Permission denied
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Suggestion from vsmoraes worked for me:
Laravel >= 5.4
php artisan cache:clear
chmod -R 777 storage/
composer dump-autoload
Laravel < 5.4
php artisan cache:clear
chmod -R 777 app/storage
composer dump-autoload
NOTE: DO NOT DO THIS ON ANY REMOTE SERVER (DEV OR PRODUCTIO...
How to prevent buttons from submitting forms
...xample: on a Login ... with some restrictions... like not allow to be used PHP sessions and neither cookies are allowed!
So any link must be converted to such form submit, so the login data is not lost.
When no login is yet done, it must also work. So no validation must be performed on links.
But I...
Is there a Subversion command to reset the working copy?
...(ha, hard Git reset does not remove unversioned files either!) rm -rf wc && svn co <url> wc .
9 Answers
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