Effect and function of white flower snake tongue and its edible method sharing of PHP traversal array

In PHP, arrays are divided into two categories: numeric indexed arrays and associative arrays.
Where the numeric index array is the same as the array in the C language, the subscript is for 0,1,2 ...
Associative array subscripts may be of any type, similar to Hash,map in other languages.
Method 1:foreach

Copy the Code code as follows:

$sports = Array (
' Football ' = ' good ',
' Swimming ' = ' very well ',
' Running ' = ' not good ');
foreach ($sports as $key = = $value) {
echo $key. ":". $value. "
";
}
?>

Output Result:
Football:good
Swimming:very Well
Running:not Good
Method 2:each

Copy the Code code as follows:

$sports = Array (
' Football ' = ' good ',
' Swimming ' = ' very well ',
' Running ' = ' not good ');
while (!! $elem = each ($sports)) {
echo $elem [' key ']. ":". $elem [' value ']. "
";
}
?>

Output Result:
Football:good
Swimming:very Well
Running:not Good
Method 3:list & each

Copy the Code code as follows:

$sports = Array (
' Football ' = ' good ',
' Swimming ' = ' very well ',
' Running ' = ' not good ');
while (!! List ($key, $value) = each ($sports)) {
echo $key. ":". $value. "
";
}
?>

Output Result:
Football:good
Swimming:very Well
Running:not Good

This paper introduces the effect and function of white flower snake tongue and its edible method the method of PHP traversal array is shared, including the function and the edible method of the white snake tongue grass, hoping to be helpful to a friend who is interested in PHP tutorial.

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