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using href links inside tag
...name="forma" onchange="location = this.value;">
<option value="Home.php">Home</option>
<option value="Contact.php">Contact</option>
<option value="Sitemap.php">Sitemap</option>
</select>
UPDATE (Nov 2015): In this day and age if you want to have a dr...
How to escape special characters in building a JSON string?
...ilt into whatever language you're using, like JavaScript's JSON.stringify, PHP's json_encode, or Python's json.dumps. If you're using a language that doesn't have such functionality built in, you can probably find a JSON parsing and encoding library to use. If you simply use language or library func...
Why check both isset() and !empty()
... @karim IMO empty is one of the most misunderstood functions in PHP. The tiny snippet about "no warning is generated" is very easy to overlook. I had to scan the documentation myself a few times to spot it to post it here.
– deceze♦
Dec 30 '10 at 4...
How can I prevent SQL injection in PHP?
... statements. This makes sure the statement and the values aren't parsed by PHP before sending it to the MySQL server (giving a possible attacker no chance to inject malicious SQL).
Although you can set the charset in the options of the constructor, it's important to note that 'older' versions of PH...
How can I create an error 404 in PHP?
My .htaccess redirects all requests to /word_here to /page.php?name=word_here . The PHP script then checks if the requested page is in its array of pages.
...
Getting the first character of a string with $str[0]
...
Does PHP $str[0] take into account that there can be 2Byte long chars? UTF and such? (even though substr() does not help with it either!)
– Tomer W
Jun 26 '13 at 13:29
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How do I upgrade PHP in Mac OS X?
...
You may want to check out Marc Liyanage's PHP package. It comes in a nice Mac OS X installer package that you can double-click. He keeps it pretty up to date.
http://php-osx.liip.ch/
Also, although upgrading to Snow Leopard won't help you do PHP updates in the futu...
Safe characters for friendly url [closed]
...ct is fairly straightforward: [...] params.toString() // "key=730d67"" (3) PHP Manual, http-build-query: "Generate URL-encoded query string. [...] The above example will output: 0=foo&1=bar[...]" (4) J. Starr, Perishable Press: "When building web pages, it is often necessary to add links that re...
How to automatically generate a stacktrace when my program crashes
...tation fault. Documentation can be found in the libc manual.
Here's an example program that installs a SIGSEGV handler and prints a stacktrace to stderr when it segfaults. The baz() function here causes the segfault that triggers the handler:
#include <stdio.h>
#include <execinfo.h>
...
move_uploaded_file gives “failed to open stream: Permission denied” error
...is error when trying to configure the upload directory with Apache 2.2 and PHP 5.3 on CentOS.
13 Answers
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