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Unknown array size
Discuss Unknown array size in the PHP Development forum on Dev Shed.
Unknown array size PHP Development forum discussing coding practices, tips on PHP, and other PHP-related topics. PHP is an open source scripting language that has taken the web development industry by storm.
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January 2nd, 2013, 08:35 AM
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Registered User
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Join Date: Jan 2013
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Unknown array size
hello everyone!!
I ' m really really new to php and I was wondering if it's possible to search an array of unknown size.
I have a string and I use explode in order to split it into other strings using as a delimeter the space character.
Then as a result,I have an array of strings.
Now,what I want to do is call a function for every string in the array but I dont know how many strings-how many array elements- exist.
How can I make this loop?
Thanks in advance!
here's what I have so far..
PHP Code:
$wholeString = $_GET['str'];
$array = explode(" ", $wholeString );
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January 2nd, 2013, 08:44 AM
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You always can know the size of an array using count.
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January 2nd, 2013, 08:54 AM
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Sarcky
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Join Date: Oct 2006
Location: Pennsylvania, USA
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Your question has generic answers which can use foreach, array_walk, count, or any number of other things. Foreach is probably what you want.
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January 2nd, 2013, 09:22 AM
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thank you guys so much for your answers.
Also I'd like to ask if "count" is the best way to check
when I have reached the last element of the array,as in my code
the last element of the array has to deal with a different function from the other ones
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January 2nd, 2013, 09:28 AM
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Sarcky
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Join Date: Oct 2006
Location: Pennsylvania, USA
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use array_pop to get the last element off the array beforehand.
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January 2nd, 2013, 09:36 AM
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Registered User
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Quote: | Originally Posted by ManiacDan use array_pop to get the last element off the array beforehand. |
If I have understand properly the use of array-pop it deletes the last element of the array.All I want to do is to save the last element in a variable in order to use it for a check in the code
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January 2nd, 2013, 09:44 AM
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It does both. It returns the last element into a variable and removes it from the array. Alternatively you can use 'count' (as previously suggested) as the index of the last element and keep the array in tact.
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January 2nd, 2013, 09:55 AM
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Sarcky
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Join Date: Oct 2006
Location: Pennsylvania, USA
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PHP Code:
$array = array(,1,2,3,4,5,"hello");
$last = array_pop($array);
foreach ( $array as $value ) {
someFunction($value);
}
otherFunction($last);
-Dan
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