PHP variables

Hello,

I am kind of a newbie to PHP. How can I include a conditional statement within a variable?

EX:

    $example = "example";

    $mainvariable= "This is just an".
    if ($example){echo $example;}
    ." code for my problem";

Code (markup):

I keep getting the error:

Parse error: syntax error, unexpected T_IF

Any help or direction would be fantastic!

Thanks in advance,

 

Why you want to add IF/ELSE to a variable ? It's just not possible !
What you want to get by doing this ?

 

What exactly are you trying to do? I can help.

 

I was trying to write an advanced search feature and wanted to modify the $sql variable depending on which advanced search variables were included in the search.

 

Doesn't make sense... your if statement is setup wrong though...

if ( $example = "example") { Then do this } Else { Do this }

 

<?php
$example = "Big Example";
$mainvariable= "This is just an ";
if (isset($example)) {
     echo $example." code for my problem";
} else {
exit(); // exit script if $example is empty
}
?>

PHP:

Merging variables with a string :

1. $merged = $var1."string";
2. $merged2 = $var1, "string";

 

I think this is what you mean :

1. $mainvariable is the main variable.
2. If $example is not empty, add the string 'example' to the $mainvariable.
3. Then, complete the $mainvariable with string 'code for my problem'

$example = "example";

$mainvariable = "This is just an";

if ($example != '') { $mainvariable .= $example; }

$mainvariable .=" code for my problem";

PHP:

- ads2help

 

You want what's called the "ternary operator".

$example = 'bird';
$mainvariable = 'Can the animal fly? ' . ($example == 'bird' ? 'Yes' : 'No');

Code (markup):

No need for "if" in this context; just follow your test with a question mark and the result you want if the test is true, and then a colon and the result you want if the test is false. To avoid associative ambiguity just put the whole thing inside a set of parentheses.

 

all above are true but last one is the best
$example = 'bird';
$mainvariable = 'Can the animal fly? ' . ($example == 'bird' ? 'Yes' : 'No');//short if and else

 

Thank you all for your help! This has been a very informative thread!