How To Find a Specific Value in an Array

Home > PHP > Array

Q

How To Find a Specific Value in an Array? - PHP Script Tips - PHP Built-in Functions for Arrays

✍: FYIcenter.com

A

There are two functions can be used to test if a value is defined in an array or not:

array_search($value, $array) - Returns the first key of the matching value in the array, if found. Otherwise, it returns false.
in_array($value, $array) - Returns true if the $value is defined in $array.

Here is a PHP script on how to use arrary_search():

<?php 
$array = array("Perl", "PHP", "Java", "PHP");
print("Search 1: ".array_search("PHP",$array)."\n");
print("Search 2: ".array_search("Perl",$array)."\n");
print("Search 3: ".array_search("C#",$array)."\n");
print("\n");
?>

This script will print:

Search 1: 1
Search 2: 0
Search 3:

2007-04-20, 5471👍, 0💬

How To Sort an Array by Values
How To Sort an Array by Values? - PHP Script Tips - PHP Built-in Functions for Arrays Sorting an array by values is doable by using the sort() function. It will re-order all pairs of keys and values based on the alphanumeric order of the values. Then it will replace all keys with integer keys sequen... 2007-04-21, 6039👍, 0💬

How To Sort an Array by Keys
How To Sort an Array by Keys? - PHP Script Tips - PHP Built-in Functions for Arrays Sorting an array by keys can be done by using the ksort() function. It will re-order all pairs of keys and values based on the alphanumeric order of the keys. Here is a PHP script on how to use ksort(): <?php ... 2007-04-21, 5636👍, 0💬

How to Loop through an Array
How to Loop through an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations The best way to loop through an array is to use the "foreach" statement. There are two forms of "foreach" statements: foreach ($array as $value) {} - This gives you only one temporary variable to ho... 2007-04-20, 5534👍, 0💬

How To Copy Array Values to a List of Variables
How To Copy Array Values to a List of Variables? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations If you want copy all values of an array to a list of variable, you can use the list() construct on the left side of an assignment operator. list() will only take values with integ... 2007-04-20, 5483👍, 0💬

How To Find a Specific Value in an Array
How To Find a Specific Value in an Array? - PHP Script Tips - PHP Built-in Functions for Arrays There are two functions can be used to test if a value is defined in an array or not: array_search($value, $array) - Returns the first key of the matching value in the array, if found. Otherwise, it retur... 2007-04-20, 5472👍, 0💬

How To Get All the Keys Out of an Array
How To Get All the Keys Out of an Array? - PHP Script Tips - PHP Built-in Functions for Arrays Function array_keys() returns a new array that contains all the keys of a given array. Here is a PHP script on how to use array_keys(): <?php $mixed = array(); $mixed["Zero"] = "PHP"; $mixed[1] = "P... 2007-04-21, 5436👍, 0💬

How To Get the Total Number of Values in an Array
How To Get the Total Number of Values in an Array? - PHP Script Tips - PHP Built-in Functions for Arrays You can get the total number of values in an array by using the count() function. Here is a PHP example script: <?php $array = array("PHP", "Perl", "Java"); print_r("Size 1: ".count($array... 2007-04-20, 5426👍, 0💬

How Do You If a Key Is Defined in an Array
How Do You If a Key Is Defined in an Array? - PHP Script Tips - PHP Built-in Functions for Arrays There are two functions can be used to test if a key is defined in an array or not: array_key_exists($key, $array) - Returns true if the $key is defined in $array. isset($array[$key]) - Returns true if ... 2007-04-20, 5417👍, 0💬

How To Get All the Values Out of an Array
How To Get All the Values Out of an Array? - PHP Script Tips - PHP Built-in Functions for Arrays Function array_values() returns a new array that contains all the keys of a given array. Here is a PHP script on how to use array_values(): <?php $mixed = array(); $mixed["Zero"] = "PHP"; $mixed[1... 2007-04-21, 5294👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.