Handy PHP Debugging Tools
I'm sure most folks who read this blog are already set in their ways of debugging things. And many probably already have a few custom built methods they use to look at raw data on the fly. However for those few who might be in need or are possibly looking for another approach this post is for you 
.
I used to rely solely on a step through debugger to help me debug code, and don't get me wrong stepping through code is a great way to see what the heck is going on (especially in code you are unfamiliar with and was written by monkeys), however for the last year or so I've been learning new techniques and tricks for getting my raw data visible without having to step through the code.
My all time favorite method is
echo "<pre>".print_r($array, true)."<pre>"; |
but there are times that is not good enough. like when you are trying to see data run in shell_exec() or when the page changes before you can see the echo. So to combat this I've written a method that drills through an array or an object and spits the data out in a file in a format similar to the aforementioned. I call it pre()
observe
function pre($array, $mode = 'w', $indent = "\r\n") { if(is_array($array) || is_object($array)) { $filename = 'C:\logs\dnate_pre.log'; $handle = fopen($filename, $mode); fwrite($handle, getArrayKeysAndValues($array, $indent)); fclose($handle); } else { writeToFile($array, $indent); } } |
and if you're wondering what the getArrayKeysAndValues() method does, here it is.
function getArrayKeysAndValues($array, $indent = "\r\n\t") { $txt = ''; if( is_object($array) ) { $array = get_object_vars($array); } if(is_array($array)) { $txt .= " => Array ("; foreach($array as $k => $v) { $txt .= $indent."\t[".$k."]"; if( is_array($v) || is_object($v) ) { $txt .= getArrayKeysAndValues($v, $indent."\t"); } else { $txt .= " => ".$v; } } $txt .= $indent.")"; } return $txt; } |
Occasionally I've run into a limit of how many times getArrayKeysAndValues() can call itself (100) so in cases like that I've also got a method I call kill() that kills the script and spits the output out on the browser. Not very subtle but gets the job done.
Obviously you'll have to have the log files in the proper directory on your machine. Then just include the file and call the desired method.
The rest are in the download, feel free to offer suggestions or comments.
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Online IDEs (work in a browser)
So as previously mentioned I have a cr48, is it awesome? absolutely, do I use it? not so much. Why don't I use it very much? It is a slightly complicated story. You see I had an HP mini 311 for my netbook, and what I have found out is that the 311 was not a netbook. Sadly it turns out I did many things with the 311 that I can no longer do with an actual netbook. To make it worse, it turns out that the things I do on a netbook are the same things I do on my phone (Samsung Galaxy S - Epic).
So what does that have to do with Online IDEs? Everything. I have to code, I don't know why, but I have this compulsive obsession with coding. It doesn't even matter what, it can be php, java, html, js, actionscript, whatever, as long as it can be thrown together and I can get it to compile, I have inner peace.
So back to the cr48, just because it can't code out of the box doesn't mean you can't code on it. I stumbled onto a few IDEs today that are online and can do some simple compiling. While it's true that they most cannot actual compile and render code for your playback use on the cr48, but they can save projects, upload via ftp, and even open in different IDEs.
CodeRun IDE - This is a great little browser-based IDE. Sign up is free and it will store your projects online for you. It does have a simple debugging tool, and even comes with some code-stubs to get your started (c#, php, and some js libs). Overal the look and feel is good and it fits the screen rather well. My only complaint is the that password on your account is seriously weak-sauce. I mean no special characters? For-the-love-of-whatever-gimped-db-the-backend-is-using why!? But do not let that stop you from trying it out.
Kodingen - This is an interesting little web-mash. You can grab a free account, set it to connect to your own FTP, and even get Shell access to your files. It is in beta so don't expect too much out of the box, that being said, this is a very nice offering. The site is clean and offers editing in multiple other online IDEs (Bespin, Codemirror, Ymacs), it also has a great control panel that lets you see your projects and manage your options. I have not signed up on this one yet, but it looks like a great bet to start getting your code together for when you are on the go, or borrowing someone else's cr48.
Eclipse Orion - This had been announced in 2008, and it is gaining momentum. You can download the source now if you want, but keep in mind that the project is still in the incubator. Check out this post for a little Q&A, and check this post from the "Life at Eclipse" Blog for some screenshots and little more information about the Orion Project.
IBM alphaWorks - I won't lie, I just barely found this so I have not tried it out. However since I use more than my fair share of IBM products are work, I am sure that if you try your hardest for a month and a half, open a PMR, and then fix it yourself using undocumented methods that void your service contract, this will work for you. This looks a bit like the Orion project, only with some added http/jetty translation. Also this may be a firefox only kind of browser IDE, so Chrome users get ready to drop a pass on this one.
PHPanywhere - I have not signed up with this one yet either, but I've heard a little buzz about it. This is another great little editor with syntax highlights, FTP access, project management, and some collaboration features. It is still in beta so expect new features coming and a possible shift in workflow.
shiftEDIT - Another one in the running, support for editing and publishing PHP, Ruby, Python, Perl, Java, HTML, CSS, and JS. Supports FTP and SFTP and has a syntax highlighter. Another bonus is revision history and code snippets. It has a familiar flash/flex style interface which is very clean and has right-click support and plenty of context menus. You will need to set up your domain/FTP account to do the live testing, but overal a very nice and simple IDE.
Hopefully this gets you coding and not thinking that netbooks are just for surfing the internet .
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Notepad++ the New IDE
So, as Phil mentioned I did move across the country, and for no reason other than to get out of surviving another Idaho/Utah winter...and a pretty amazing job opportunity. Which is what brings me to the dev blog today.
Since I got here I'd been using Aptana as my IDE, and generally speaking I love the Aptana/Eclipse IDE's mostly because of the tools that they have that make writing code so easy. However I've become a little frustrated with Aptana as of late because it seems to chew and chew and chew on the memory. And I noticed that at least once a day I was killing it and restarting it just to get some measurable performance back.
Anyhow one fine day about a week ago I was trying to view an .sql file in notepad++ (which I've always kept around as a quick editor) and noticed that the escaping of quotes was not quite rendering in the editor. I mentioned this to the author of said file and he mentioned I should try the "bespin" theme in n++ which I promptly did and thoroughly enjoyed. This lead me to investigate the plug-ins that notepad++ has, like I said I've always used notepad++ to some extent, I've just never paid much attention to the many plug-ins available to it (and there are many).
To make a long story short I've effectively replaced my Aptana IDE with Notepad++ and it's various useful plug-ins. At the onset I knew there were a few things notepad++ would have to have in order to make the switch and not hate it, they are as follows:
1. an Explorer view - I hate doing File->open and browsing, an explorer view is much more efficient
2. an Outline view - I've become addicted to the ability of Eclipse based IDE's to click on a method name in the outline and go directly to that method.
3. Debugger - this one is a big one, in my opinion debuggers cut troubleshooting time down by more than 50%
Nice to haves:
1. ctrl + click - It's always nice to be able to jump directly to a declaration with this simple combination
2. intellisense/auto-complete
3. SVN - I currently don't use SVN but it's nice know there's a plugin available.
In my quest I promptly found that I already had the Explorer plug-in installed (and it's simply called Explorer). And while the look and feel of the view is a little different than Eclipse, it gets the job done and I have no qualms with it.
I was also able to find an Outline plug-in called "Function List". It's a little rugged in appearance but nonetheless gets the job done and the best part is it's not attached to the main view and therefore not making viewing the code a pain.
I thought there would be no way a debugger plug-in would be as effective as the Xdebug setup for Aptana/Eclipse. I was wrong. DBGp is everything I hoped I would find in a debugger (and it uses xdebug, how awesome is that?), like the others it lacks some in the aesthetic department but it is simple to set up, easy to navigate and it works. I did have a little trouble getting it working at first but then I found this Tutorial and I was off and running.
As for the "nice to haves" since Notepad++ 5.0 you can turn on auto-complete from the settings->preferences->Backup/Auto-Completion menu, simply check "Enable auto-completion" and if you'd like check "Function parameters hint on input" to enable hints to the parameters a method expects.
I haven't found a great ctrl+click plug-in but I'm hoping one will come soon. There have been some attempts but they pale in comparison to what Eclipse has done.
As mentioned SVN is available (I believe there is more than one plug-in for it) but I haven't tried it. Another one that get's honorable mention is "Falling Bricks" it's just like Tetris, and handy on days you've got nothing else to do for staying awake while your code is compiling.
Once the plug-ins were installed I decided to give my new N++ IDE a spin for a full day. I have to admit I felt a bit naked at first, but it's been almost a week now and I've gotten to where I enjoy the draft.
Just for comparison I fired up all of my new plug-ins at one time and checked the memory consumption of notepad++, a mere 35M compared to the 235M Aptana gobbles up immediately after startup (and without being in Debug mode). I'll probably keep Aptana around for a while (at least until a satisfactory ctrl+click comes along for notepad++) but I've been using notepad++ for a few days now and haven't missed the bulkiness of Aptana one bit.
EDIT (2011.02.15): I'd like to point out that when I wrote this post I was at work on two (2) 17" monitors (no not even widescreen, but who wants 17" widescreen anymore?). However a few days ago I set this up on my home PC with a single 20" widescreen monitor (and much much better resolution options) and Oh my Giddy Aunt! I couldn't believe how Eclipse® like it looks, I almost wept.
EDIT (2011.11.03): I recently revisited the plugins department and I have some more goodness.
#1 while Explorer is handy I find Light Explorer much more to my liking. it uses one window instead of two and seems to be much quicker at launch.
#2 Xbrackets Light - automatically closes a bracket pair when the opening bracket is typed. I had been missing this more than I knew.
#3 Window Manager / File Switcher - both accomplish the same goal, which is to provide a quick way to switch between open files, but File Switcher uses an always detached frame, whereas Window Managers frame can either be detached or attached to the main npp frame. Window Manager allows you to turn off the tab bar which also could be useful. So pick your poison, or do what I do and use both until you can commit to one.
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Zend Framework vs. CodeIgniter
I hope nobody minds but this is going to be more of a rant than an actual performance comparison of the two frameworks. First of all I started using CodeIgniter almost two years ago, and while it was a bit of a thorn at first it was never super difficult to figure out how to do stuff. The documentation was easy to understand and full of examples of what to do, plus things worked when I did them. As a result I've used CodeIgniter on several projects since.
Recently at my current job the powers that be (hereafter referred to as "they") decided to go from a progressive coding approach to a more MVC type approach using a framework (either custom made or already built). I'd like to point out that I'm all for using a framework especially on the applications we've got right now. I did suggest CodeIgniter as the framework of choice but my suggestion was received with disgust, so I kept my mouth shut...big mistake.
After attempting to build their own MVC Framework "they" decided to go with Zend Server Community Edition. Now I didn't (and still don't, which is sad) know a lot about the Zend Framework so I was somewhat excited to see it in action, especially since my experience with CI has been so great. And I guess maybe that's one of the reasons I'm posting today.
For anyone out there wondering if Zend is a good match for you, STOP!
For anyone out there who recently implemented the Zend Framework, WHY? It's not to late to turn back.
I've been working with the Zend Framework for about two weeks now, and I don't expect to know everything there is to know about Zend but I do expect to know SOMETHING. Let's just take a trip down memory/nightmare lane.
Please excuse me if I can't remember all the details, I've tried so hard to block some of this from ever resurfacing.
My first task was to figure out how to ajax with zend, seems simple enough right? Shoot zend even created a helper that loads the (almost) latest jQuery libraries for you so you never have to worry about being up to date. Not only that but zend has a way to build your Ajax request so you don't have to know how to do that yourself either. What they don't tell you is that in order for the jquery libraries to be loaded on your page, you DO have to use at least one of their custom php jquery building tools (in other words, you can't make all your jquery by yourself), otherwise the libs just wont load. Instead they let you beat your head against your desk for hours and hours until you finally un-comment a test jquery builder you had previously used only to find out that was the missing piece.
Next our whole team has been tasked with creating a new application using zend, it's been over a week now, I still feel like I don't know anything. Now you might be saying to yourself, "did you try google dipstick?" Yup sure did, and as google does it pulled up all kinds of links. Almost always the top 5 go strait to the official zend documentation which is by far the worst documentation I've ever seen about anything. It's like when someone has a secret and they know you want to know, but they know that if they tell you then they'll lose the leverage they have on you, so they just hold on to it with that smirk on their face and never tell you anything. There's all kinds of words but they don't say much and the examples are horrific at best. One example I was looking at had a variable in it, and they'd conveniently cut out the part where they actually initialize that variable so you have no idea what values it is supposed to hold. Turns out it was an array, but I still don't know if it was a named array or if it can simply be numbered. I actually got a little excited when I stumbled onto the Programmers reference guide, I thought "yes if anything will help this is it", I was wrong to think that and I apologize.
Now here's the kicker, I do need to backtrack a bit. When you install zend there is a GUI that is installed to help you manage how the server works, I've recently lost this GUI, by lost I mean I know where it's supposed to be and the files are all there but the GUI doesn't show up when i put the correct URL in my browser. So I started researching this, only to find that a certain part of the server called lighttpd is not running, the GUI is the only thing that requires lighttpd. So i started googling lighttpd is not running and got a fair amount of hits on that one. None of which helped. Finally I decided to create an account with the zend forums and humbly ask the zend folks themselves what to do about my problem.
To my dismay, when I logged in I found a little counter at the bottom of the page that said "Users browsing this forum: disgruntled and 0 guests" (if you haven't guessed, I'm 'disgruntled'). You have got to be kidding me, I'm the only one on this forum? Now to be fair it was after 5:00 on the east coast so I imagine the 3 people using zend in that part of the world have gone home.
how many people on this forum?
Needless to say, I'm a little disappointed, awe who am I kidding? I'm downright furious.
On the flip side, if anyone reading this has any idea on where I can get my hands on some useful examples of zend at work. Please leave them in the comments.
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Use PHP to Build an Array of ‘Times of Day’
It's been a long time since I posted so I find it ironic that "time" is what brings me here today. Ok that was pretty corny. You'd think this would be something that would be pretty easy to find on the web, I was a little shocked there wasn't some post about it in the PHP manual but there wasn't so here it is. I was looking for a quick way to build an array of times of day starting with midnight and increasing every half hour until 11:30 PM (or 23:30 for you G.I. Joe's). PHP has an abundance of time functions that are all very useful in their own unique way. After trying various different ones i finally came up with the following.
//build array of times. $times = array(); $time = strtotime("00:00:00"); $times["00:00:00"] = date("g:i a",$time); for($i = 1;$i < 48;$i++) { $time = strtotime("+ 30 minutes",$time); $key = date("H:i:s",$time); $times[$key] = date("g:i a",$time); } |
To break it down, I set $time to start at Midnight or 00 Hours and then set my first $times array member to the lamens "12:00 am" using the date() function. Since there are 24 hours in a day I know there are 48 half hours in a day so I set my loop to run 48 times.
Lets break down the loop:
$time = strtotime("+ 30 minutes",$time); |
This will add 30 minutes to the $time variable each time the loop runs.
$key = date("H:i:s",$time); |
This sets $key to the military notation of the current $time (the why will become more obvious later).
Finally I set my next $times array member with:
$times[$key] = date("g:i a",$time); |
Again the value of this member is set to the ordinary am/pm notation.
If you were to look at an array member in plain text it would look something like this:
$times["19:00:00"] = "7:00 pm"; |
Pretty simple, now just to display it. For my purposes I chose a select box.
<select class="required" name="CloseTime"> <option value="">--Select--</option> <?php foreach($times as $key => $value) { ?> <option value='<?php echo $key; ?>'<?php if(isset($CloseTime) && $CloseTime == $key) echo " selected='selected'"?>><?php echo $value; ?></option> <?php } ?> </select> |
Since I set up my $key as military notation I am able to use $key as the value of the <option>. I did this so I can easily put that value in the DB as a TIME and not have to worry about stripping the " am" and " pm". Alternatively since $value was set up with am/pm notation it displays nicely to the user as 7:00 PM rather than 19:00 thus allowing regular Joe to keep his fingers in his nose rather than use them to figure out what time that is.
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Using jQuery to Make a Smart Search
Recently I've been forced to develop a relationship with jQuery (something I had no interest in while I was working with team awesome). I have to admit it has been quite pleasant and my tolerance has grown into a very strong liking of the library (so I'm a little slow). This proved very useful when I was asked to make a search field do more than just search for an ID. I decided NOT to fowl up our nice sleek looking header with a clunky drop down box, instead I turned to jQuery to make the search bar intuitive...observe.
$("#searchForm").submit(function() { //the regular expressions in this function are not meant for validation as much as determining which value to search by. var submitted_appid = $(".search input[name=AppID]").val(); if(/^[\d]+$/.test(submitted_appid) == true) { //do nothing since the input is already properly named } else if(/^[\d-]+$/.test(submitted_appid) == true) { //change name of input to SSN $(".search input[name=AppID]").attr("name","SSN"); } else if(/^[A-Za-z]+$/.test(submitted_appid) == true) { //change name of input to LastName $(".search input[name=AppID]").attr("name","LastName"); } else { //no match, alert the rep and return false alert("invalid search value:\nfor SSN please use numbers and at least one dash '-'\n for LastName use only letters\n for AppID use only numbers") return false; } //there was a match add an action and submit the form. $(this).attr("action",'search.php'); $(this).submit(); }); |
The HTML
<div class="search">
<form id="searchForm" name="searchForm" method="post" action="">
<input type="text" name="AppID" value="Search..." />
</form>
</div> |
Then your search app would do something like the following
if(isset($_POST['AppID']) { //enter sql code here } else if(isset($_POST['SSN']) { //enter sql code here } else if(isset($_POST['LastName']) { //enter sql code here } |
Basically the jQuery decides what to search on based on the characters in the input field, if the wrong mix of characters is present then we fire off an alert message notifying the irresponsible party and correcting their ignorant ways.
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Handy PHP trick I learned today.
Nice to see the Dev blog is still here, and that I can remember my login. Here is a useful debugging trick I learned for PHP, hopefully it's not in one of Phil's link posts.
echo '<pre>'.print_r($app,true).'</pre>';
this bad boy will give you all of the values of an array, variable etc.
more to come soon.
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Summer 2009 LinkPost Extravaganza!
Whoa, what happened? I'll tell you what happened, I blinked and it was August! But fear not! I have kept the links that I was going to post and have compiled them into what I like to call the Summer 2009 LinkPost Extravaganza! Cheesy? Yes, a little absurd? Absolutely, but hey at least you're getting the links right?
This Post features plenty of images (icons, textures, etc.), a large selection of jQuery goodness, some php, fonts, and plenty of tools, resources, and tutorials. I even threw in a few links for our growing mac-user community (yeah, you can't see it, but I'm patting myself on the back).
Enough drivel, time to give the peoples what they want, the links!
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&& || and or
So it turns out you learn stuff when you read and I've noticed that you remember stuff when you write it down, so since this is the best tech blog ever I'm writing it down here so you all can look at it and learn it (it's gonna be up to you to write it down somewhere else if you wanna remember it). I'm not sure about JSTL or other languages but I'd wager they are the same. if you were wondering which is better to use && vs. "and" or || vs. "or" in your expressions it pretty much all depends because they have different precedences (is that a word? huh spell check likes it.). First of all && has a higher precedence than || (at least in php) and "and" has a higher precedence than "or" but || has a higher precedence than "and", thus || and && both have higher precedences than "or" and && also has a higher precedence than "and". Confused? k here is the breakdown, higher precedence listed first:
&& || and xor //I know we didn't cover this but it's in there... trust me. or |
as a side note "xor" means one or the other is true but not both... I can see how that could be handy.
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$i++ || ++$i
So for some time now I've wondered what the underlying difference is in writing a variable increment as $i++ (aka post-increment) vs. writing it as ++$i (aka pre-increment). I've seen it done both ways and even tried it both ways and have been unable to determine a difference. Recently I was reading a php manual (thus the php code used in this post) and VIOLA! I stumbled into the profound answer. It is subtle yet significant. if you use the post-increment or $i++ it does just that, increments the variable after the expression that includes said variable has run. And as you may have guessed the pre-increment or ++$i does just the opposite. The book I was reading used the following scenario to explain:
$x = 3; $x++ < 4; |
This would evaluate to true as 3 is less than 4 and the expression is run before the variable $x is incremented. If you run the same using the pre-increment
$x = 3; ++$x < 4; |
It would evaluate as false because the variable is incremented before the expression is run and 4 is not less than 4.
So unless I'm mistaking the following code:
for ($i = 1;$i < 8; $i++){ echo $i; } |
Should run the same as
for ($i = 0; $i < 8; ++$i){ echo $i; } |
I guess in that scenario it's just boils down to personal preference.
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