Checking if array value exists in a PHP

Question

i am storing birtday dates in an array

$birthdays = array
 (
  array("Alex",5,12),
  array("Tom",2,20),
  array("Sarah",6,12),
  array("Anna",6,8) 
  array("Jonh",10,7)  );

i need html form(2 input textbox)i have to enter the date,press the button and if the date is exist,will print the name of person who have a birthday today

Answer 1

You could try something like this...

$SearchValue = "Sarah"
foreach ($birthdays as $value)
{
    if (is_array($value))
    {
        if (in_array($SearchValue, $value)
        {
            //prints the inner array if the inner array contains your search value
            print_r($value);
        }
    }
}

Answer 2

Try this:

<?php

$birthdays = array
 (
  array("Alex",5,12),
  array("Tom",2,20),
  array("Sarah",6,12),
  array("Anna",6,8),
  array("Jonh",10,7)  
 );

 function getBirthdayNameByDate($birthdaysArray, $day, $month)
 {
     foreach($birthdaysArray as $array)
     {
         if($array[1] == $month && $array[2] == $day)
            return $array[0];
     }

     return null;

 }

$result = getBirthdayNameByDate($birthdays, 8, 6);

var_dump($result);

Answer 3

With this function:

function retrieveBirthdays( $birthdays, $month, $day=0 )
{
    return array_values
    (
        array_filter
        (
            $birthdays, 
            function( $row ) use( $month, $day ) 
            {
                if( $day ) return ( $row[1]==$month && $row[2]==$day );
                else       return ( $row[1]==$month );
            } 
        ) 
    );
}

print_r( retrieveBirthdays( $birthdays, 2, 20 ) );

will output:

Array
(
    [0] => Array
        (
            [0] => Tom
            [1] => 2
            [2] => 20
        )

)

Instead, to obtain all june birthdays, you can use:

print_r( retrieveBirthdays( $birthdays, 6 ) );

and you will obtain:

Array
(
    [0] => Array
        (
            [0] => Sarah
            [1] => 6
            [2] => 12
        )

    [1] => Array
        (
            [0] => Anna
            [1] => 6
            [2] => 8
        )

)

---

• Read more about array_filter()

Answer 4

$birthdays = array (
array("Alex",5,12),
array("Tom",2,20),
array("Sarah",6,12),
array("Anna",6,8), 
array("Jonh",10,7),
array()
);

foreach($birthdays as $birthday) {
if($birthday) {
echo $birthday[0]."<br/>";
echo $birthday[1]."<br/>";
echo $birthday[2]."<br/>";
}
}

See if above code helps, it simply has a if condtion in foreach to check that the array is not emptu