PHP Escape Chararacters ignored

deadlock · 01-16-2006, 08:55 AM

I'm having problems with escape characters in double quoted strings.

Basically my PHP install (or perhaps just firefox?) is ignoring escape commands, so "\n", "\r", etc are being ignored. However "\\" is interpreted as a single "\".

The example script I am tring to run is as follows:

PHP Code:



<?php 
    printf("pi equals %f\n", 3.14159); 
    printf("%.2f\n", 3.14159); 
    printf("%10.2f\n", 3.14159); 
    printf("%.10f\n", 3.14159); 
    printf("%.9s\n", "halfofthestring"); 
    printf("%b %d %f %s\n", 123, 123, 123, "test"); 
?>

So each of the printf() instances should be on a new line, but are instead run on into each other.

Any Help

deadlock · 01-16-2006, 09:03 AM

I think I've worked it out actually - I wasn't putting <Pre> tags around the PHP block...

Would this be the reason?

reddazz · 01-16-2006, 09:04 AM

If you need to print a new line, you need to use because "\n" only affects the source of the html page and not the actual html that php produces. The code below is a sample of what you would need to do

Code:

<?php
    printf("pi equals %f\n<br />", 3.14159);
    printf("%.2f\n<br />", 3.14159);
    printf("%10.2f\n<br />", 3.14159);
?>

YissKill · 01-16-2006, 10:25 AM

actually you could do it by two diferent ways you can add a print "<pre >" line or add the tag before the "\n" cause the normal jumps of line are usually ignored by the browser till you specify the browser to respect the format with the <pre > tags so you worked it out fine, but if you don't want to mess with style tags and use the conventional text format tags , and so on you can use the tag to insert the line jump.

Regards JIG

reddazz · 01-16-2006, 10:38 AM

Quote:

Originally Posted by YissKill

actually you could do it by two diferent ways you can add a print "<pre >" line or add the tag before the "\n" cause the normal jumps of line are usually ignored by the browser till you specify the browser to respect the format with the <pre > tags so you worked it out fine, but if you don't want to mess with style tags and use the conventional text format tags , and so on you can use the tag to insert the line jump.

Regards JIG

You can put before or after \n, its just a matter of preference. I like on its own line when reading the source, so I tend to put it after \n or in a seperate print statement. It really doesn't make a difference to the resulting php program, so use it whichever way is best for you.