PHP array_search() Function - GeeksforGeeks (2024)

Tutorials
DSA
- Data Structures
- Algorithms
  - Analysis of Algorithms
  - Searching Algorithms
  - Sorting Algorithms
  - Greedy Algorithms
  - Dynamic Programming
  - Graph Algorithms
  - Pattern Searching
  - Recursion
  - Backtracking
  - Divide and Conquer
  - Mathematical Algorithms
  - Geometric Algorithms
  - Bitwise Algorithms
  - Randomized Algorithms
  - Branch and Bound
  - Algorithms Tutorial
- DSA Tutorial
- Practice
  - All DSA Problems
  - Problem of the Day
  - Company Wise Coding Practice
  - GfG SDE Sheet
  - Practice Problems Difficulty Wise
  - Language Wise Coding Practice
  - Curated DSA Lists
- Competitive Programming
- Company Wise SDE Sheets
- DSA Cheat Sheets
- Top Interview Questions
- Puzzles
Data Science
- Python Tutorial
- R Tutorial
- Machine Learning
- Data Science using Python
- Data Science using R
- Data Science Packages
  - Pandas Tutorial
  - NumPy Tutorial
- Data Visualization
  - Python Data Visualization Tutorial
  - Data Visualization with R
- Data Analysis
  - Data Analysis with Python
  - Data Analysis with R
- Deep Learning
- NLP Tutorial
Web Tech
- HTML Tutorial
- CSS Tutorial
- JavaScript Tutorial
- PHP Tutorial
- ReactJS Tutorial
- NodeJS Tutorial
- AngularJS Tutorial
- Bootstrap Tutorial
- Typescript
- Web Development Using Python
- Wordpress Tutorial
- Web Design
- Cheat Sheets
- Learn Complete Web Development
Courses
- Coding for Everyone
- DSA to Development
- Machine Learning & Data Science
- Generative AI & ChatGPT
- Become AWS Certified
- DSA Courses
- Programming Languages

Last Updated : 01 Dec, 2021

Improve

Like Article

Save

Report

In this article, we will see how to search the specific value in an array & corresponding return the key using the array_search() function in PHP, & will also understand its implementation through the examples. The array_search() is an inbuilt function in PHP that is used to search for a particular value in an array, and if the value is found then it returns its corresponding key. If there are more than one values then the key of the first matching value will be returned.

Syntax:

array_search($value, $array, strict_parameter)

Parameters: This function takes three parameters as described below:

$value: This is the mandatory field that refers to the value that needs to be searched in the array.
$array: This is the mandatory field that refers to the original array, which needs to be searched.
strict_parameter (optional): This is an optional field that can be set to TRUE or FALSE, and refers to the strictness of search. The default value of this parameter is FALSE.
- If TRUE, then the function checks for identical elements, i.e., an integer 10 will be treated differently from a string 10.
- If FALSE, strictness is not maintained.

Return Value: The function returns the key of the corresponding value that is passed. If not found then FALSE is returned and if there is more than one match, then the first matched key is returned.

Example: The below program illustrates the array_search() function in PHP.

PHP

<?php

// PHP function to illustrate the use of array_search()

function Search($value, $array)

{

return (array_search($value, $array));

}

$array = array(

"ram",

"aakash",

"saran",

"mohan",

"saran"

);

$value = "saran";

print_r(Search($value, $array));

?>

Output:

Example: This example illustrates the working of function when the strict_parameter is set to FALSE. Note that the data types of the array and to be searched elements are different.

PHP

<?php

// PHP function to illustrate the use of array_search()

function Search($value, $array)

{

return (array_search($value, $array, false));

}

$array = array(

45, 5, 1, 22, 22, 10, 10);

$value = "10";

print_r(Search($value, $array));

?>

Output:

Example: In this example, we will be utilizing the above code to find out what will happen if we pass the strict_parameter as TRUE.

PHP

<?php

// PHP function to illustrate the use of array_search()

function Search($value, $array)

{

return (array_search($value, $array, true));

}

$array = array(45, 5, 1, 22, 22, 10, 10);

$value = "10";

print_r(Search($value, $array));

?>

Output:

No Output

Reference: http://php.net/manual/en/function.array-search.php

Chinmoy Lenka

Improve

PHP array_reverse() Function

PHP array_shift() Function

PHP array_search() Function - GeeksforGeeks (2024)

PHP

PHP

PHP

Please Login to comment...

Similar Reads