PHP 7 Data Structures and Algorithms

Associative array

An associative array is accessed by a key which can be any string. In an associative array, values are stored against the key instead of a linear index. We can use an associative array to store any type of data, just like the numeric array. Let us create a student array where we will store student information:

$studentInfo = []; $studentInfo['Name'] = "Adiyan"; $studentInfo['Age'] = 11; $studentInfo['Class'] = 6; $studentInfo['RollNumber'] = 71; $studentInfo['Contact'] = "[e-mail]"; foreach($studentInfo as $key => $value) {     echo $key.": ".$value."\n"; } 

Here is the output of the code:

Name: Adiyan Age: 11 Class: 6 RollNumber: 71 Contact: [e-mail] 

Here we are using each key to hold one piece of data. We can ...