Array related PHP Functions |
Functions for populating arraysarray_push () This function s used to add one or more elements at the end of the array. The general format for using array_push is: array_push($array_name, “element1”, “$element2”); array_unshift () This adds one or more elements at the beginning of an existing array. The general format for using array_unshift is: array_unshift($array_name, “element1”, “$element2”); Functions for retrieving array valueseach() and list() - These functions usually appear together in a PHP statement. They are used to go through an array, returning its keys and values. For example the following code snippet could be used to return keys and values of an associative array. while ( list ($namekey, $value) = each ($teacher)){
foreach() This function also goes through an array and may be used to print array values or assign the values to a scalar variable. The general format for using this function is: foreach ($teacher as $t ){This statement goes through the array named $teacher and display every value in that array in a new line. Functions for modifying array valuesShuffle () - As the name implies, this function randomizes the elements of an existing array. The general format of such a function is as follows: shuffle ($teacher);where $teacher is the name of an existing array. array_merge () - Also as the name implies, merges or combine the values of two arrays into one. The general format for using this function: $all_employees = array_merge ($teacher, $employee);where $teacher and $employee are the two arrays being merged into one new array named $all_employees. array_shift() This function removes and return the first element of an existing array. The general format foe the function is: $first_element = array_shift ($teacher); reset () As the name implies, this function points back to the beginning of an array. The format for using the function: reset ($teacher); array_pop Removes and return the last element of an existing array. The general format for using this function is as follows: last_array_element = array_pop ($teacher);where $teacher is the name of an existing array. There may be other array functions that we did not cover here, you can find some of these functions on the at : PHP website |
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