[Resolved] help me to retrieve a number from string like $123

[anoopmail]

hi,

pls tell how to retrieve only numerical part from a string like $123 or Rs230,30 per anum.

any in-built functions in php is available?

thanx in advance..

[Installer]

Here's a (non-built-in) function

function str_get_nums($str)
{
    $new_str = '';
    for ($i = 0; $i < strlen($str); $i++) {
        if (ctype_digit($str{$i}) {
            $new_str .= $str{$i};
        }
    return $new_str;
}

[anoopmail]

thaaaaaaaaaaanx...

[e-man]

Originally posted by Installer
Here's a (non-built-in) function

function str_get_nums($str)
{
    $new_str = '';
    for ($i = 0; $i < strlen($str); $i++) {
        if (ctype_digit($str{$i}) {
            $new_str .= $str{$i};
        }
    return $new_str;
}

[/B]

Sorry to but in but I don't really get the ($str{$i}) part. Can you access a character in a string like that in php?
Could you do the same thing as your function using arrays? (implode, explode)

[leatherback]

Hey Installer,

thx for showing how to acces text as an array! I know it from IDL, but didn't know how to do it in PhP. This snippet went into my snippetbank!

J.

[anoopmail]

i re-wrote the same function to include support for decimal values,
and used normal string accessing method, ie [], it look like,

function str_get_nums($str)
	{
    $new_str = ''; 
    for ($i = 0; $i < strlen($str); $i++)	
		if (ctype_digit($str[$i]) || $str[$i]==".")
			 $new_str .= $str[$i]; 

return $new_str;
}

and it works.

[Installer]

Using curly braces, {}, is the "normal" way. The way you're doing it is deprecated.

The manual says:

Characters within strings may be accessed and modified by specifying the zero-based offset of the desired character after the string in curly braces.

Note: For backwards compatibility, you can still use array-brackets for the same purpose. However, this syntax is deprecated as of PHP 4.

[anoopmail]

mmmmm........