Truncation

By Koolvin on Jan 20, 2011

This is a function that truncates input in a rather different way if I'm correct.
(I've never seen it done this way)

Usage: getTrunc("String",LENGTH);

What it does is first truncates the string the the given length, then explodes into an array by spaces, finally it removes the last key and impodes into a string.

function getTrunc($n, $l) {
    if ($l >= strlen($n)) { return $n; }
    $n = explode(' ', substr($n, 0, $l));
    if (count($n)>1) { unset($n[count($n)-1]); }
    return implode(' ', $n).'...';
}

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Comments

sunslayer - Feb 26, 2011

well you can always type cast it to string but that would probably take longer then just checking the length

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bone282 - Feb 26, 2011

yeah true, i was tired when i replied.
but who would pass an integer through that function. i suppose you could by getTrunc((string) $integer, 2);

but anyway, all i wanted to do was pass on the little - if (!isset($string{$count})){ - i like it and tbh it's pretty new to me :)

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sunslayer - Feb 26, 2011

function getTrunc($n, $l) {
    if (!isset($n{$l}) { return $n; }
    $n = explode(' ', substr($n, 0, $l));
    if (count($n)>1) { unset($n[count($n)-1]); }
    return implode(' ', $n).'...';
}

your checking the size before its exploded, getTrunc(12345,2) will return 12345 instead of 12

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bone282 - Feb 26, 2011

the braces would be before the explode() array, have a look :)

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sunslayer - Feb 26, 2011

i don't recommend using curly braces on arrays as they only work with strings, if you pass $n as an integer it will fail

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bone282 - Feb 24, 2011

One little tweek to make it a little faster is to use isset() instead of strlen(). This is because isset() is a language construct and not a function.

if ($l >= strlen($n)) return $n;
to:
if (!isset($n{$l})) return $n;

note using $string{$length} counts from zero.

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bone282 - Feb 09, 2011

looks quick n dirty, i like it

+like

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Koolvin - Jan 20, 2011

I didn't think about that, and thanks for catching that mistake!

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sunslayer - Jan 20, 2011

unset($n[$count($n)-1]);

should be

unset($n[count($n)-1]);

you also have two ;'s on the following line

also if there are no spaces then this will only return '...'

if(count($n)>1) unset($n[count($n)-1]);

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