PHP string to integer question

Question

Quick question:

I have strings in the form of '121', '9998', etc. They are literally numbers surrounded by the single quotes.

How can I remove these quotes and cast them as integers? I'm passing to another program that needs them to be integers.

Thanks.

As you can see from various responses, you should clarify if the single quote is part of the string. i.e. Do you mean $str = '123', or do you mean $str = "'123'"? — danorton
– danorton, Commented Sep 14, 2011 at 3:35

Kerrek SB · Accepted Answer · 2011-09-14 03:29:20Z

4

Use trim() and intval():

$n = intval(trim($str, "'"));

answered Sep 14, 2011 at 3:29

Kerrek SB

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Jason McCreary · Accepted Answer · 2011-09-15 02:33:48Z

4

There are a few ways to do this, but the most common are:

$int = intval($string);

Or, my preference:

$int = (int)$string;

Since $string has a literal single quote, you can trim() it first by taking advantage of its second parameter.

$int = (int)trim($string, "'");

Remember that PHP is a weak typed, dynamic language.

edited Sep 15, 2011 at 2:33

answered Sep 14, 2011 at 3:28

Jason McCreary

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3 Comments

zerkms Over a year ago

"They are literally numbers surrounded by the single quotes."

Tarek Over a year ago

casting is better than intval in term of speed

zerkms Over a year ago

@Tarek: even though you're literally right, it doesn't make sense until you have less than millions of castings

zerkms · Accepted Answer · 2011-09-14 03:29:05Z

3

$int = (int)trim("'121'", "'");

answered Sep 14, 2011 at 3:29

zerkms

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