PHP Array Exercises : Get an array with the first key and value
PHP Array: Exercise-47 with Solution
Write a PHP function to get an array with the first key and value.
Sample Solution:
PHP Code:
<?php
function array_1st_element($my_array)
{
list($k) = array_keys($my_array);
$result = array($k=>$my_array[$k]);
unset($my_array[$k]);
return $result;
}
$colors = array('c1'=>'Red','c2'=>'Green','c3'=>'Black');
print_r(array_1st_element($colors));
?>
Sample Output:
Array ( [c1] => Red )
Flowchart:

PHP Code Editor:
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PHP: Tips of the Day
PHP: Pass a PHP string to a JavaScript variable (and escape newlines)
<script> var myvar = <?php echo json_encode($myVarValue); ?>; </script>
Using json_encode() requires:
- PHP 5.2.0 or greater
- $myVarValue encoded as UTF-8 (or US-ASCII, of course)
Since UTF-8 supports full Unicode, it should be safe to convert on the fly.
Note that because json_encode escapes forward slashes, even a string that contains </script> will be escaped safely for printing with a script block.
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