Array Loop - get the first value into a foreach loop

Question

I have an array, and I want to get the first value into a foreach loop. then send that value to a function.

This does not work

foreach ($frequency as $i) {        
   showphp_AlexVortaro (getphp_AlexVortaro ($frequency[$i]));
   showphp_Smartfm(getphp_Smartfm($frequency[$i]));        
}

I have problems to understand the problem. Do you want to get only the first value of the array and send it to a function or do you want to send every value to a function? — Felix Kling
– Felix Kling, Commented Feb 13, 2010 at 22:21
As nobody is linking to it: Documentation of the foreach control structure: php.net/manual/en/control-structures.foreach.php — Felix Kling
– Felix Kling, Commented Feb 13, 2010 at 22:23

karim79 · Accepted Answer · 2010-02-13 22:21:47Z

2

I think you mean to use the current 'exposed' offset as your functions' arguments:

foreach($frequency as $i) {        
   showphp_AlexVortaro (getphp_AlexVortaro($i));
   showphp_Smartfm(getphp_Smartfm($i));        
}

or:

for($i=0; $i<count($frequencies); $i++) {        
   showphp_AlexVortaro(getphp_AlexVortaro($frequencies[$i]));
   showphp_Smartfm($frequencies[$i]);        
}

answered Feb 13, 2010 at 22:21

karim79

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2 Comments

streetparade Over a year ago

What if it ia associated array?

karim79 Over a year ago

@streetparade, I'm assuming that $frequencies refers to a numerically indexed array of floats (or strings), e.g. 96.5 or '96.5' (I arrived at that assumption by assuming that getphp_Smartfm returns something radio related based on a given frequency).

TheGrandWazoo · Accepted Answer · 2010-02-13 22:19:02Z

2

$i is the value of your array in the foreach loop. Instead of sending $frequency[$i] you must use '$i'.

If you want to fetch the keys use the following construction:

foreach ($array as $key => $value) 
{
 // Do something
}

answered Feb 13, 2010 at 22:19

TheGrandWazoo

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1 Comment

streetparade Over a year ago

Ok the Comment // Do something is funny, i think there should be a control statement am i wrong?

streetparade · Accepted Answer · 2010-02-13 23:12:10Z

0

The current(); function would return the first value;

echo current($array);

answered Feb 13, 2010 at 23:12

streetparade

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