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Start your free trialNdong Landry
1,703 PointsHow to correctly apply the isset() function, PLEASE HELP,
I am required to Use the function isset to test if the incremented value equals one of the keys in the $facts array. If there is a key that matches, display the value AFTER the number. NOTE: all numbers between 1 and 100 should still be displayed
This is my code (I could only manage to use the switch, since I am yet to grasp the key concept of the isset(), please kindly direct me on how to go about this)
<?php $facts = array( 57 => ' on Heinz ketchup bottles represents the number of varieties of pickles the company once had.', 2 => ' is the approximate hours a day Giraffes sleeps', 18 => ' is the average hours a Python sleeps per day', 10 => ' per cent of the world is left-handed.', 11 => ' Empire State Buildings, stacked one on top of the other, would be required to measure the Gulf of Mexico at its deepest point.', 98 => '% of the atoms in your body are replaced every year', 69 => ' is the largest number of recorded children born to one woman', ); //add your loop below this line for ($i = 1; $i<=100; $i++) { echo $i."\n";
switch ($i)
{ case 57: echo "$facts[$i]\n"; break;
case 2:
echo "$facts[$i]\n";
break;
case 18:
echo "$facts[$i]\n";
break;
case 10:
echo "$facts[$i]\n";
break;
case 11:
echo "$facts[$i]\n";
break;
case 98:
echo "$facts[$i]\n";
break;
case 69:
echo "$facts[$i] \n";
break;
default:
break;
}
} ?>
<?php
$facts = array(
57 => ' on Heinz ketchup bottles represents the number of varieties of pickles the company once had.',
2 => ' is the approximate hours a day Giraffes sleeps',
18 => ' is the average hours a Python sleeps per day',
10 => ' per cent of the world is left-handed.',
11 => ' Empire State Buildings, stacked one on top of the other, would be required to measure the Gulf of Mexico at its deepest point.',
98 => '% of the atoms in your body are replaced every year',
69 => ' is the largest number of recorded children born to one woman',
);
//add your loop below this line
for ($i = 1; $i<=100; $i++)
{
echo $i."\n";
switch ($i)
{
case 57:
echo "$facts[$i]\n";
break;
case 2:
echo "$facts[$i]\n";
break;
case 18:
echo "$facts[$i]\n";
break;
case 10:
echo "$facts[$i]\n";
break;
case 11:
echo "$facts[$i]\n";
break;
case 98:
echo "$facts[$i]\n";
break;
case 69:
echo "$facts[$i] \n";
break;
default:
break;
}
}
2 Answers
Steven Parker
231,275 PointsIf isset returns true or false depending on whether the argument you give it has a value, you should be able to replace all the switch cases with a single if that uses isset on the same array item that it will print out if it returns true. You'll notice that those cases are all printing the same thing anyway.
Vojislav Stupar
Courses Plus Student 12,217 PointsJust use the same iteration of the previous task. This is when you are looping through the 1 to 100. Use the isset function to validate the match isset($facts[$i]) If the key is there it will validate as true and you can echo the value of the key. In this case your array can be dynamic and it will echo any value inside.