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 Topic: simple php question |
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sb.net
Joined: 22 Sep 2006
Posts: 120
Location: USA
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 Posted: Sun 29 Oct '06 2:39 Post subject: simple php question |
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I am making a PHP script, and I can not figure this out.
| Code: | <?php
$1star="<img src="images/1star.jpg">";
$2star="<img src="images/2star.jpg">";
echo $1star;
?> |
What I am trying to do is that I want to put an image in when I type "$xstar." what am I doing wrong? |
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Brian
Joined: 21 Oct 2005
Posts: 209
Location: Puyallup, WA USA
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| Posted: Sun 29 Oct '06 8:59 Post subject: |
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Maybe try this:
| Code: | <?php
$stars = array(
'<img src="images/1star.jpg">',
'<img src="images/2star.jpg">',
);
echo $stars[0];
echo $stars[1];
// go random
echo $stars[ rand( 0, ( count( $stars ) - 1 ) ) ];
?> |
Don't start a variable name with a number. It is also much more efficient to use an array to hold the values, in my view.
But with your code you have obvious errors, see corrections below:
| Code: | <?php
$star1="<img src=\"images/1star.jpg\">";
$star2="<img src=\"images/2star.jpg\">";
echo $star1;
?> |
...or use single quotes to wrap the variables...
| Code: | <?php
$star1='<img src="images/1star.jpg">';
$star2='<img src="images/2star.jpg">';
echo $star1;
?> |
But I'd suggest you stick with arrays.
Just as an aside, if you use ' single quotes instead of " double quotes when ever possible, it in theory will reduce the work on the PHP parsing engine because it does not parse the contents in the ' ... ' single quotes to look for varialbes as in:
| Code: | <?php
$a = 'bla bla bla';
echo "<p>This is the value of string a: $a</p>";
echo '<p>This is the value of string a: $a</p>'; |
Notice that the output is very different, in the second example it does not work to display the value of $a, instead it simply prints $a, it does not treat it like a variable.
I prefer to use single quotes in nearly all cases where I echo a line of text.
I will use even with variables as in:
| Code: | $a = 'bla bla bla';
echo '<p>This is the value of string a:' . $a . '</p>';
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Just my two cents. |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7371
Location: Germany, Next to Hamburg
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| Posted: Sun 29 Oct '06 15:13 Post subject: Re: simple php question |
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| sb.net wrote: | I am making a PHP script, and I can not figure this out.
| Code: | <?php
$1star="<img src="images/1star.jpg">";
$2star="<img src="images/2star.jpg">";
echo $1star;
?> |
What I am trying to do is that I want to put an image in when I type "$xstar." what am I doing wrong? |
There are two mistakes.
As Brian told: the thing with the quotes. $star1='<img src="images/1star.jpg">';
Secondly a String ($something) can't start with a number.
The difference " and ' in PHP in the pasrsing.
example:
$a='my house';
$b="I am living in $a";
$c='I am living in $a';
echo $b;
//will output I am living in my house
echo $c;
//will output I am living in $a |
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sb.net
Joined: 22 Sep 2006
Posts: 120
Location: USA
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| Posted: Sun 29 Oct '06 16:36 Post subject: |
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Thanks  it will work great.
EDIT: It works, but I get confused typing "<?php echo $stars[3];" to get 4 stars. Is there a way too tell it to do it so that when I type "<?php echo $stars[3];" it means 3 stars? |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7371
Location: Germany, Next to Hamburg
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| Posted: Sun 29 Oct '06 17:25 Post subject: |
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an array allways starts with 0 stars[0] will be the first  |
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Brian
Joined: 21 Oct 2005
Posts: 209
Location: Puyallup, WA USA
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| Posted: Sun 29 Oct '06 20:28 Post subject: |
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Yes, arrays do always start with 0, but you could sort of "force" it to start with 1 as in:
| Code: | $stars = array(
'1' => 'bla bla bla',
'2' => 'bla bla bla bla',
'3' => 'bla bla bla bla bla',
); |
Rather than try to make PHP be the creation you want it to be, something I used to try to do too, just learn the system and use it as it was intended. This will require you to re-tool your approach, but you will get far better results in the end. |
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sb.net
Joined: 22 Sep 2006
Posts: 120
Location: USA
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| Posted: Sun 29 Oct '06 20:54 Post subject: |
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Ok, I am learning PHP, so I am wondering a lot. I found that in HTML to use it how it was intended.
--Thanks |
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