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Arrays :

 Array

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  • An array is a data structure that is used for storing more than one value in a single variable.
  • In php using array () function we can create an “array”.
  • The array values are defined in numbers (or) character.
  • In array the values are separated by commas (,).

php programming Syntax :

$variable = array( value);
click below button to copy the code. php tutorial - team

  • There are three types of arrays used in php they are :
  1. Indexed arrays / Numerical arrays - An array with a numeric index
  2. Associative arrays - An array where each ID key is associated with a value
  3. Multidimensional arrays - An array containing one or more arrays

Indexed Arrays :

  • In php generally the array index value is assigned automatically starting with Zero (0).
  • A numeric array stores each array element with a numeric index.
  • There are two methods to create a numeric array.
  • In the following example the index is automatically assigned (the index starts at 0):
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  • In the following example you access the variable values by referring to the array name and index:
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php programming Syntax :

$variable = array( value1,value2,value3);
click below button to copy the code. php tutorial - team

Associative Arrays :

  • An associative array is defined as name with their key value.
  • With an associative array, each ID key is associated with a value.
  • When storing data about specific named values, a numerical array is not always the best way to do it.
  • With associative arrays we can use the values as keys and assign values to them.
  • In this example we use an array to assign ages to the different persons:
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php programming Syntax :

$variable = array(key => value1, key => value2 , key =>value3);
click below button to copy the code. php tutorial - team

Multidimensional Arrays :

  • A multidimensional array contains one are more arrays in a single variable.

php programming Syntax :

$variable = array(key => array(value1,value2…..));
click below button to copy the code. php tutorial - team




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