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Lamb-Blaster 4000 posted:how do I get mail() to work with my google apps domain mail? Try with a third-party library like Swiftmailer, which can actually provide intelligent and useful feedback when things go wrong, unlike mail().
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Nov 29, 2010 22:40
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I'm trying to decode something in Java that was encrypted with php, but I don't know any php really. Can someone help me translate this php encryption function?code:
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Nov 30, 2010 04:23
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They're using some third-party code, so it may be wonky. The padding ensures that the string is at least sixteen characters in length. The character in question is 0x0c, ASCII 14, form feed. If the string is longer than 16 characters, nothing is changed. Trim removes whitespace at the beginning and end, which is pretty silly considering that base64_encode doesn't attach newlines. So, you should be able to decrypt it by reversing the base64, unencrypting, and trimming off any 0x0c characters on the end. Beware that certain AES implementations may or may not pad the key with null bits to a certain length. If you're having problems with the decrypt, that's probably at fault.
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Nov 30, 2010 04:39
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McGlockenshire posted:Try with a third-party library like Swiftmailer, which can actually provide intelligent and useful feedback when things go wrong, unlike mail(). mail() is fine but you really need your own mail spool to avoid the time sending anything to Google. Postfix is easy to setup for this.
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Nov 30, 2010 08:19
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McGlockenshire posted:Try with a third-party library like Swiftmailer, which can actually provide intelligent and useful feedback when things go wrong, unlike mail(). Thanks! Swiftmail worked beautifully, here's my code if anyone else comes lookin for this answer code:
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Nov 30, 2010 18:35
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I've got a function I need to write to solve a problem and was wondering if anyone might be able to think of a decent solution. All it needs to do is calculate the number of minutes between two DateTimes. The catch is: anything between 11pm and 7am doesn't count. I figure I could just loop over the minutes between $startTime and $endTime and add a minute to a $totalTime if it's not between 11pm-7am, but doesn't seem like the best solution, especially if there's a few weeks between the two dates. I was curious if anyone can come up with something a bit more elegant?
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Nov 30, 2010 18:58
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JasonV posted:I've got a function I need to write to solve a problem and was wondering if anyone might be able to think of a decent solution. Figure out how many days are between start and end. For the first day it's 16 hours (7-11) minus the start time, for the last day use a similar equation, then for each day inbetween, add 16 hours. gwar3k1 fucked around with this message at 20:05 on Nov 30, 2010 |
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Nov 30, 2010 19:13
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I'm curious, is there an official (or unofficial) standard for comparing strings? If I'm not worried about ordering or case, am I better checking php:<?
if ($x === $y){ echo $x,' equals ', $y; }?>php:<?
if (strcmp($x,$y) === 0){ echo $x,' equals ', $y; }?>While I'm on the topic of strings, is echo and commas good practice? I've read in a few places it's the fastest/easiest to read, but I don't recall seeing it used that often.
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Dec 1, 2010 14:32
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I usephp:<? echo "$x equals $y";?> It's cleaner, no commas, less chance of a syntax error.
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Dec 1, 2010 15:06
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Baggy_Brad posted:I'm curious, is there an official (or unofficial) standard for comparing strings? quote:While I'm on the topic of strings, is echo and commas good practice? I've read in a few places it's the fastest/easiest to read, but I don't recall seeing it used that often. php:<?php $then = microtime(true); $cycles = 1000000; while($cycles--) { echo "1", "2", "3", "4", "5", "\n"; } printf("\nTime taken: %0.4f\n", microtime(true) - $then); Time taken: 13.0630 Time taken: 13.2739 Time taken: 13.0910 php:<?php $then = microtime(true); $cycles = 1000000; while($cycles--) { echo "1" . "2" . "3" . "4" . "5" . "\n"; } printf("\nTime taken: %0.4f\n", microtime(true) - $then); Time taken: 12.7821 Time taken: 12.9171 Time taken: 12.8754 Conclusion: If you are doing one million echos, using concat instead of commas is about 5% faster. I personally use commas when splitting an echo over many lines to avoid quote escaping: php:<?php echo '<a href="', $foo, '">', $bar, '</a>'; McGlockenshire fucked around with this message at 19:25 on Dec 1, 2010 |
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Dec 1, 2010 19:21
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Interpolated double quote variables kick rear end if your editor highlights them.
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Dec 1, 2010 20:12
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Is "filter_var" good enough for input sanitizing? Some brazilian fucknut was trying to get into works' online store with injection exploits about a hour ago, and for whatever reason the software we use didn't seem to protect against passing quotes in the search field. I've since kind of gone overboard setting up input filtering on the search engine. This is my stop-gap solution right now:php:<?
$data['substring'] = str_replace("\0", "", $data['substring']);
if (function_exists('filter_var'))
{
$data['substring'] = filter_var($data['substring'], FILTER_SANITIZE_SPECIAL_CHARS);
}
else
{
$data["substring"] =
mysql_real_escape_string(trim(htmlentities($data["substring"], ENT_QUOTES)));
}
?>edit: lol newline'd the mysql_real_escape_string part cause of table breakin'
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Dec 1, 2010 23:42
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McGlockenshire posted:
Commas are twice as fast for me. Using your code I get this: Time taken: 0.2130 Time taken: 0.2075 Time taken: 0.2073 Time taken: 0.2079 And with concatenation: Time taken: 0.4286 Time taken: 0.4167 Time taken: 0.4127 Time taken: 0.4239 I don't think it matters much. I guess if people really care, they can try it themselves. PHP 5.3.2 on Ubuntu 10.4
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Dec 2, 2010 01:02
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I think if you're writing code where that type of performance change makes a difference, you're using the wrong language.
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Dec 2, 2010 02:56
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It's hard to imagine a webapp that spends more time in PHP than it spends in the database, isn't it?
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Dec 2, 2010 02:59
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Doctor rear end in a top hat posted:Commas are twice as fast for me. Using your code I get this: Something ain't right here. I adjusted the printf with a fopen/fwrite to php://stderr and piped output to /dev/null at the command line. For concat, I got ~0.88 seconds, then I got a whopping ~2.2 seconds for commas. Then I wrapped the while in an ob_start and ob_end_clean, which resulted in a consistent ~0.48 for concat and a consistent ~0.40 for commas. Output is way more expensive than how you get there. rt4 posted:It's hard to imagine a webapp that spends more time in PHP than it spends in the database, isn't it? Not necessarily. Some of the worst pages on our internal app approach and regularly exceed 50% PHP time. Lots of business logic that can't be done at the database level (because the original developers were clueless and we're stuck with their architectural mistake). For example, a report that Purchasing uses many times a day takes about 5 seconds on average to generate, spending "only" 2.4 of that in the database. They've burned 24 minutes in the past two weeks waiting for that page to load. We call it the "soul sucking" factor, it's a great thing to measure and mitigate. (The Purchasing lead has burnt a full hour waiting for our app over the past two weeks. He's our best, worst user.) McGlockenshire fucked around with this message at 08:30 on Dec 2, 2010 |
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Dec 2, 2010 08:20
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McGlockenshire posted:Then I wrapped the while in an ob_start and ob_end_clean, which resulted in a consistent ~0.48 for concat and a consistent ~0.40 for commas. I should have mentioned that this is what I did.
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Dec 2, 2010 15:52
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is this even possible? On my php enabled webserver (godaddy + wordpress) have a folder root/files/imagecycle/ with 5 images in /imagecycle In root/files/ there is one image called banner.png Every 20 minutes I want to copy one file (sequentially, randomly, whatever) from /imagecycle to /files and rename it banner.png The end result being that banner.png changes to a different image in a set folder every 20 minutes, but retains the same filename. I bet there's a simpler way to do this. Google hasn't been much help. Any ideas?
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Dec 4, 2010 07:51
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You need five files swapped out every 20 minutes. Or, in other words:php:<?php // Five files. $files = array( 'file1.jpg', 'file2.jpg', 'file3.jpg', 'file4.jpg', 'file5.jpg' ); // Five files over sixty minutes. $minutes_per_file = 60 / count($files); // = 12 $current_minutes_in_hour = date('i'); // Make zero minutes equal to sixty minutes. Yeah, really. Why? if($current_minutes_in_hour) == 0 $current_minutes_in_hour = 60; $array_index = floor($current_minutes_in_hour / $minutes_per_file); // Because: 0 for minutes 0-11, 1 for 12-24, 2 for 25-36, 3 for 37-48, 4 for 49-60 $filename = $files[ $array_index ]; If you need this run on a timer, you'll need it to be a cron script. I'm not sure if GoDaddy does those, they're a pretty universally awful host. As an alternative to hard-coding the filenames, you can also do this: php:<?php $files = glob('directory/*.jpg');
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Dec 4, 2010 08:02
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McGlockenshire posted:As an alternative to hard-coding the filenames, you can also do this: Even better. That's what I was hoping for, but I didn't want to ask too much.
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Dec 4, 2010 08:08
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If you are serving different images up by changing them to the same file name you can also run into problems with caching, where the user's browser won't change the image because it doesn't know it has changed on the server. Also, if you don't have cron and these banners aren't time relevant you could cycle the images by pageviews and store a counter in your $_SESSION array, so that after every x page views it shows the next banner.
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Dec 4, 2010 23:45
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I'm trying to sort my array by different categories. The code that works looks like this.code:Warning: array_multisort() [function.array-multisort]: Argument #1 is expected to be an array or a sort flag When $getview echos as author the code still doesn't work. code:
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Dec 8, 2010 19:34
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Super Delegate posted:I'm trying to sort my array by different categories. The code that works looks like this. Without more information on the types of these variables it's a bit hard to say, but perhaps $getview is a string and the [] is being treated as string offset notation? You would then be passing a string rather than an array.
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Dec 8, 2010 22:37
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Hammerite posted:Without more information on the types of these variables it's a bit hard to say, but perhaps $getview is a string and the [] is being treated as string offset notation? You would then be passing a string rather than an array. code:$getview is set to the same words (title,author,price,etc) and it does not work.
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Dec 8, 2010 23:05
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The first argument to array_multisort needs to be an array, you're passing it a value off the query string. In your working example you're passing an array called $author to the method. In the second you're passing a string called $getview. If, for example, you have an array called $author and an array called $title declared in your code, you need some logic. I.E. php:<?
$author = array(....);
$title = array(....);
if ($getview == "author"){
array_multisort($author, SORT_DESC, $books);
} else if ($getview == "title"){
array_multisort($title, SORT_DESC, $books);
}
?>php:<?
$author = array(....);
echo $_GET['view']; // author
$getview = $_GET['view'];
if (is_array($$getview)){
array_multisort($$getview, SORT_DESC, $books);
}
?>
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Dec 8, 2010 23:22
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Baggy_Brad posted:Alternatively, I think you can use $$ to access the arrays. The $$ operator makes a variable with the name of what was in the original. php:<? $butt = "abutt"; $$butt = "twobutts"; echo $abutt; ?>
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Dec 8, 2010 23:45
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Oh, I didn't twig to what he was trying to do. Yeah, as it stands if $_GET['view'] contains 'author' you're trying to array_multisort the string 'author', whereas what you wanted to do was array_multisort the array $author. Yes, using variable variables (with appropriate sanitisation) would be one way of doing what you want to do, although I don't approve of it.
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Dec 9, 2010 00:18
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Hammerite posted:Oh, I didn't twig to what he was trying to do. Ah it all makes sense now. The whitelist would be an easy approach. php:<?
$fields = array("author", "name", "blah", "bluh");
if(!in_array($_GET['view'], $fields))
die("Don't dick with my querystring, rear end");
?>
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Dec 9, 2010 00:24
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Doctor rear end in a top hat posted:The $$ operator makes a variable with the name of what was in the original. Not only make, but also access. E.g. php:<?
$_GET['view'] = "author";
$getview = $_GET['view'];
$author = array("one","two","do the kungfu");
print_r($$getview); // Array ( [0] => one [1] => two [2] => do the kungfu )
?>
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Dec 9, 2010 12:31
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Does anyone know what the largest file size that PHP can handle is? I am trying to do this... code:Or is it just one part in particular that is going wrong?
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Dec 10, 2010 10:10
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PHP can open any size file the file system can handle, loading the file data into memory is what you're concerned about, and depends on the memory limit settings in php.ini.
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Dec 10, 2010 10:39
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gibbed posted:PHP can open any size file the file system can handle, loading the file data into memory is what you're concerned about, and depends on the memory limit settings in php.ini. Cheers I came back to post that it ended up being the server that was the problem. I had fixed the memory limit but not restarted it. Schoolboy error on my part.
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Dec 10, 2010 14:46
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Long John Power posted:Cheers I came back to post that it ended up being the server that was the problem. I had fixed the memory limit but not restarted it. Schoolboy error on my part. There's also the maximum execution time which is set to 30 seconds by default. Sounds like that wasn't the issue but it's always a good setting to be aware of.
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Dec 10, 2010 19:24
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I have a form where people can type in data and then I want php to do some math with it. Is there a way to set the entered value directly as a variable? Right now I'm doing something like $data = $_POST["valueofinput"] after the form submit because that's what the first google result told me to do but I'd like to just skip this step if possible.
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Dec 16, 2010 13:56
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Ziir posted:I have a form where people can type in data and then I want php to do some math with it. Is there a way to set the entered value directly as a variable? Right now I'm doing something like $data = $_POST["valueofinput"] after the form submit because that's what the first google result told me to do but I'd like to just skip this step if possible. There is, but you don't want to do it. It would mean a user could hoax your form and submit a value for whatever variable in your script they wanted. In fact, you really should be doing some checking on the value from POST before attempting anything with it. E.G. at the very least: $data = floatval($_POST["valueofinput");
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Dec 16, 2010 14:16
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Ziir posted:I'd like to just skip this step if possible. ahhh nm. epswing fucked around with this message at 15:27 on Dec 16, 2010 |
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Dec 16, 2010 15:15
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Ziir posted:I have a form where people can type in data and then I want php to do some math with it. Is there a way to set the entered value directly as a variable? Right now I'm doing something like $data = $_POST["valueofinput"] after the form submit because that's what the first google result told me to do but I'd like to just skip this step if possible. I think this requires a more colourful response. Accepting form content should be seen as analogous to agreeing to accept the sexual advances of anyone who happens to wander past. Your request is therefore akin to "google says I should use a condom, but I'd like to skip that step". DO NOT SKIP STEP!!
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Dec 16, 2010 15:47
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KuruMonkey posted:I think this requires a more colourful response.
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Dec 16, 2010 16:13
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Baggy_Brad posted:There is, but you don't want to do it. It would mean a user could hoax your form and submit a value for whatever variable in your script they wanted. Thanks, that was my next question, how do I forbid a user from entering in something that isn't a number?
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Dec 16, 2010 18:47
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Ziir posted:Thanks, that was my next question, how do I forbid a user from entering in something that isn't a number? You could use Javascript to validate user input, but you can't count on that. You have to either check the input yourself (look at http://php.net/manual/en/function.preg-match.php to make some sanity-checking regexes) or clean it and use it as best you can. floatval() will return 0 if whatever gets passed in can't be interpreted as a float* (same with intval), so you can just use whatever comes out of it. *This is an oversimplification of what the manual says: http://php.net/manual/en/function.floatval.php Munkeymon fucked around with this message at 18:55 on Dec 16, 2010 |
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Dec 16, 2010 18:52
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