 Php Echo, Learn what the echo can do for you. Includes basic echo and variable p |
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 Nov 14 2007, 11:13 PM
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#1
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Privileged Member  Group: [HOSTED] Posts: 528 Joined: 13-October 06 From: Alberta, Canada Member No.: 31,584  |
PHP Echo
Description The echo() command has one purpose, displaying whatever you put in between the brackets. Learn to use it to your advantage. Try It Out CODE <?php echo ""; ?> There is your echo command. For now, it does nothing. It has no value to display. CODE <?php echo "This is my text."; ?> Outcome This is my text. Now this echo command has a value to display. Whatever you replace "This is my text." with will be displayed. Alright, lets move onto the next step. This time, we will include a variable in the echo command. CODE <?php $var = "This is a variable"; echo "$var. Congratualations, you just parsed a variable in an echo!"; ?> Outcome This is a variable. Congratualations, you just parsed a variable in an echo! Got it? The variable ($var) had a value, and when you placed $var in the echo command, it was displayed. Sounds like a different language, right? Its ok if you don't understand yet, with some practice you will eventually understand it. These are the basics of the echo() comand. Not much to it if you are a beginner, but as you progress, there is much more. |
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Nov 15 2007, 02:42 AM
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Premium Member Group: Members Posts: 150 Joined: 9-April 07 From: Nebraska Member No.: 41,301 |
This is something that could help if you actually have more HTML on your page than PHP.
The echo tag is pretty much exactly like typing in HTML outside of the php tags, so you can also just end the php, and start it and end it whenever you have variables again or something. CODE <?php $var = "Someone's Name"; ?> Some HTML that you want to do. Some more HTML that has <?php $var; ?>. That should display: CODE Some HTML that you want to do. Some more HTML that has Someone's Name. You might have to put <?php echo $var; ?> instead of <?php $var ?> But I'm not really sure. Just try it, and it should work. At leas one of them will. That would only be better if you have a bunch of HTML and only a little PHP code. You could also use that to copy HTML over and over again: CODE <?php for($i=0;$i<100;$i++) { ?> some HTML that you want to loop 100 times. <?php } ?> I think I've tried that before, and it worked. If I have any errors in that, feel free to correct me. I hope this helps! |
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Nov 15 2007, 04:34 AM
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#3
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Advanced Member Group: Members Posts: 132 Joined: 23-September 07 Member No.: 50,511 |
I don't have any experience with php, but at least now I know how to output basic text (or variable text) to the screen. Thanks for the brief, but useful tut.
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Nov 15 2007, 04:54 AM
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#4
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$p4m 0n j00 $h4m3 m3 0nc3 $p4m 0n m3 $h4m3 m3 7\/\/1c3 Group: [HOSTED] Posts: 6,444 Joined: 21-September 04 From: 9r33|\| 399$ 4|\|D 5P4/\/\ Member No.: 1,218  |
Echo's are a great way to start off in learning php as it will help you understand how variables will work and when you start working with php includes when designing full scripts.
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Nov 15 2007, 11:54 AM
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#5
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Advanced Member Group: Members Posts: 102 Joined: 13-October 07 Member No.: 51,530 |
instead of echo sometimes it's usefull to use printf, like in C language.
$value1 = "my test var"; $value2 = 200; printf ("%s has size of %d", $value1, $value2); |
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Nov 15 2007, 12:23 PM
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#6
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Privileged Member Group: Members Posts: 628 Joined: 20-May 06 Member No.: 23,968 |
The different types of quotes are equally important as well. Without them you'd have to sit there trying to print values in ASCII character codes you wanted to see.
CODE echo "These basic quotation marks allow you to use the apostrophe and are useful for basic text."; echo 'These single quotes allow you to use standard quotemarks and are useful for dispensing HTML code'; echo `These grave accents allow you to put both single and double quotes`; They work for variables in this language as well. I end up using them a lot within my code. I don't often end up using the printf function, though. It reminds me of C and why I dislike it. |
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Nov 15 2007, 03:29 PM
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#7
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Privileged Member Group: [HOSTED] Posts: 528 Joined: 13-October 06 From: Alberta, Canada Member No.: 31,584 |
One thing that I have recently learned and that I will be using for my website once I remake it (I've shut it down for now) is using echo to help create a sweet layout... bassically program all your variables at the top of the page, code them into another variable called template and then echo the template variable... I estimate that it will work quite nice because you can make large changes easily and quickly... and I think this method would work quite well.
EDITED IN AFTER POST: It would look like this CODE <?php
//-------------------------- //Content itself //-------------------------- $content[1] = <<< html blablablabla html; $content[2] = <<< html blablabla again html; //------------------------ //layout design with content in it //------------------------ $template = <<< html <table width=500> <td> $content[1]</td> <td> $content[2]</td> html; //-------------------- //show the page //-------------------- echo "$template"; ?> This post has been edited by KansukeKojima: Nov 15 2007, 07:20 PM |
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Nov 16 2007, 02:05 AM
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#8
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Member [Level 2] Group: [HOSTED] Posts: 80 Joined: 18-October 07 Member No.: 51,724 |
In PHP, we can also use Print? (Yes, indeed) But it's just a matter of preferences however. The print is also setted to display the output. Please correct me if i am wrong; i just started learning php.
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Nov 16 2007, 09:09 PM
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#9
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Super Member Group: Members Posts: 290 Joined: 5-October 07 From: Random Places Member No.: 51,171  |
You should have also provided a few other tricks with echo. Such as random numbers or something like that. Look at this code. CODE <?php $var1="Hello people!"; $var2=str_replace("people","world",$var1); echo $var1." and ".$var2; ?> The above code shou |