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POHow can I insert a variables name from a string in Perl?
 

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  1. POHow can I insert a variables name from a string in Perl?
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    <p>I am trying to insert a variable <code>$font1</code> below. The variable <code>$font1</code> is the name of the font e.g. arial. I really want it to return <code>$arial</code> (or whatever <code>$font</code> is) as a variable.</p> <p>When <code>$arial</code> is called, it gets the arial.ttf from a folder on my server via get_fonts.pl.</p> <p>I have tried everything <code>\$$font</code> <code>'"$font"'</code> and every possible variation of that.</p> <p>I even tried <code>if ($font=="arial"){$font = a ton of different attempts;}</code></p> <pre><code>do "get_fonts.pl"; &amp;GetFonts($im); foreach $key (keys %ENV) { if($key !~ /[A-Z]/){ if ($key="sometext") { $text="$ENV{'typetext'}"; $color="$ENV{'typecolor'}"; $font="$ENV{'typefont'}"; $size="$ENV{'typesize'}"; $string = qq~ $text ~; $gd_text = GD::Text-&gt;new() or die GD::Text::error(); $gd_text-&gt;set_font($arialb, $size) or die $gd_text-&gt;error; $gd_text-&gt;set_text($string); my ($w, $h) = $gd_text-&gt;get('width', 'height'); $y1 = (300 / 6); if ($w &lt;= 380) { $x1 = ((400 / 2) - ($w / 2)); $im-&gt;stringFT("$blue", $font1, $size, 0, $x1, $y1, "$string"); } ... </code></pre> <p>Pay no attention to excluded ending brackets..</p> <p>Notice whare I called <code>$font1</code>.. If I call <code>$arialb</code> all is fine.</p> <p>Here is get fonts</p> <pre><code>sub GetFonts { my($im) = $_[0]; $arial = "fonts/arial.ttf"; # I tried Tons of things here to no avail if ($font=="arialb") { $font1 = '$arialb'; # and so many different other attempts } $arialb = "fonts/ariblk.ttf"; $ariali = "fonts/ariali.ttf"; $arialbi = "fonts/arialbi.ttf"; $comic = "fonts/comic.ttf"; $comicb = "fonts/comicbd.ttf"; $verdana = "fonts/verdana.ttf"; $verdanab = "fonts/verdanab.ttf"; $verdanai = "fonts/verdanai.ttf"; $verdanabi = "fonts/verdanaz.ttf"; } </code></pre> <p>I also desire to do the same with <code>$color</code> but, once <code>$font</code> is figured out, I should be able to fiqure that out.</p> <p>Thanks for any help.</p>
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    1. COMaybe you won't want to hear this, but what you want to do is a pretty bad idea. See here for discussion: http://perl.plover.com/varvarname.html
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      1. POHow can I insert a variables name from a string in Perl?
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    2. CO@Jimbo: I did a little clean-up on your formatting, but frankly it's a disaster. Can you please clean up the blocks and add some indentation? You can't expect many people to wade through that in an effort to help you.
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    3. COOne more thing: if you start all your programs with `use warnings;` you get lots of helpful - well - warnings. So you would have seen this: Argument "fonts/arial.ttf" isn't numeric in numeric eq (==) at <program-name> line <number>.
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