{"id":13685,"date":"2024-03-15T07:39:00","date_gmt":"2024-03-15T07:39:00","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-the-array_map-function-in-php\/"},"modified":"2025-08-05T22:02:10","modified_gmt":"2025-08-05T22:02:10","slug":"what-is-the-usage-of-the-array_map-function-in-php","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-the-array_map-function-in-php\/","title":{"rendered":"PHP array_map Function: Usage &#038; Examples"},"content":{"rendered":"<p>The array_map function is used to apply a callback function to each element in an array. It will return a new array where each element is the result of applying the callback function to each element of the original array.<\/p>\n<p>The syntax of the array_map function is as follows:<\/p>\n<p>Use the callback function to process each element in the arrays provided as arguments, such as array1 and array2.<\/p>\n<p>The sample code is shown below:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">square<\/span>(<span class=\"hljs-params\"><span class=\"hljs-variable\">$n<\/span><\/span>) <\/span>{\r\n  <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-variable\">$n<\/span> * <span class=\"hljs-variable\">$n<\/span>;\r\n}\r\n\r\n<span class=\"hljs-variable\">$numbers<\/span> = [<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>];\r\n<span class=\"hljs-variable\">$squaredNumbers<\/span> = <span class=\"hljs-title function_ invoke__\">array_map<\/span>(<span class=\"hljs-string\">\"square\"<\/span>, <span class=\"hljs-variable\">$numbers<\/span>);\r\n\r\n<span class=\"hljs-title function_ invoke__\">print_r<\/span>(<span class=\"hljs-variable\">$squaredNumbers<\/span>);\r\n<\/code><\/pre>\n<p>Output:<\/p>\n<pre class=\"post-pre\"><code>Array\r\n(\r\n    [0] =&gt; 1\r\n    [1] =&gt; 4\r\n    [2] =&gt; 9\r\n    [3] =&gt; 16\r\n    [4] =&gt; 25\r\n)\r\n<\/code><\/pre>\n<p>In the example above, we defined a callback function called &#8220;square&#8221; to calculate the square of a number. Then, we applied this callback function to each element in the $numbers array using the array_map function, resulting in a new array called $squaredNumbers which contains the square values of each element. Finally, we printed the contents of the new array using the print_r function.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The array_map function is used to apply a callback function to each element in an array. It will return a new array where each element is the result of applying the callback function to each element of the original array. The syntax of the array_map function is as follows: Use the callback function to process [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[842,18267,11121,2846,663],"class_list":["post-13685","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-array-methods","tag-array_map","tag-callback-functions","tag-php-arrays","tag-php-functions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PHP array_map Function: Usage &amp; Examples - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use PHP&#039;s array_map function to apply a callback to array elements. Get syntax explanation and code examples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-the-array_map-function-in-php\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP array_map Function: Usage &amp; Examples\" \/>\n<meta property=\"og:description\" content=\"Learn how to use PHP&#039;s array_map function to apply a callback to array elements. 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