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Question

Removing leading 0?

Answer 1

+5 A:

$str = "01";
echo intval($str);

Tomalak 2008-12-01 14:15:27

Maybe it's worth putting an is_numeric() block around it to catch cases where $str is not a number, since intval returns 0 on failure: http://fr.php.net/manual/en/function.intval.php

Michael Stum 2008-12-01 15:36:08

Answer 2

A:

Just multiply by 1

echo "01"*1

J.D. Fitz.Gerald 2008-12-01 14:18:05

Works, but only as long as the string is a number. :-)

Tomalak 2008-12-01 14:19:04

is this a serious answer? I can't tell.

Jeff Atwood 2008-12-01 15:10:05

The classic, Add-an-aritmetic-calculation-that-doesnt-change-the-original-value-to-make-the-compiler-cast-it-to-a-numeric-value-trick! ;)

Stefan 2008-12-01 15:17:43

This is not a good way to do this.

epochwolf 2008-12-01 15:38:45

@Jeff Atwood: I'm guessing this is a serious answer. So many PHP programmers are self-taught and know how to get the job done, not how to get it done *right*[email protected]. Fitz.Gerald: Sorry that you're being dogged. This really peeves CS people. It's not an explicit solution to the problem.

Lucas Oman 2008-12-01 15:52:33

@epochwolf - why is this not a good way to do this? I have previously advocated $str_value + 0 to convert a number-in-a-string to a number.

staticsan 2008-12-02 05:40:30

Answer 3

A:

Regex replace /^0*/ with '' for a string return solution

annakata 2008-12-01 14:19:03

Answer 4

+10 A:

You can use the ltrim function.

ltrim($str,"0");

Matt 2008-12-01 14:28:18

Answer 5

+1 A:

if you use the trim functions, you might mistakenly remove some other character, like by triming "12" your will have "2". use the intval() function. this function will convert your string (which could start by a leading zero or not) to an integer value. intval("02") will be 2 and intval ("32") wll be 32.

farzad 2008-12-01 19:25:31

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Removing leading 0?

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