{"id":135481,"date":"2024-06-13T12:35:57","date_gmt":"2024-06-13T07:05:57","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=135481"},"modified":"2024-06-13T12:35:57","modified_gmt":"2024-06-13T07:05:57","slug":"call-by-reference-in-php","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/call-by-reference-in-php\/","title":{"rendered":"Call by Reference in PHP"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">&lt;html&gt;\r\n    &lt;head&gt;&lt;title&gt;PHP For Loops&lt;\/title&gt;\r\n    &lt;body&gt;\r\n     &lt;center&gt;\r\n  \r\n&lt;?php\r\n\r\n  function swap(&amp;$a,&amp;$b) \/\/ copy in local\r\n  {\r\n        $c=$a;\r\n        $a=$b;\r\n        $b=$c;\r\n  }\r\n  \/\/ call main\r\n  $a=50;\r\n  $b=30;\r\n  echo \"&lt;br&gt; Before Swaping: \".$a.\" \".$b;  \r\n  swap($a,$b);  \/\/ call by value\r\n  echo \"&lt;br&gt; After Swaping: \".$a.\" \".$b;  \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n    \/\/   function abc(&amp;$n)   \/\/    reference variable $n=15\r\n    \/\/   {\r\n    \/\/       $n=$n+10;\r\n    \/\/   }\r\n     \r\n\r\n\r\n\r\n    \/\/   \/\/ Main\r\n\r\n    \/\/   $n=5;   \/\/  local variable main  $n=5\r\n    \/\/   abc( $n);  \/\/  call by reference \r\n    \/\/   echo $n;  \/\/ $n\r\n?&gt;\r\n&lt;\/center&gt;\r\n&lt;\/body&gt;\r\n&lt;\/html&gt;<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 &lt;html&gt; &lt;head&gt;&lt;title&gt;PHP For Loops&lt;\/title&gt; &lt;body&gt; &lt;center&gt; &lt;?php function swap(&amp;$a,&amp;$b) \/\/ copy in local { $c=$a; $a=$b; $b=$c; } \/\/ call main $a=50; $b=30; echo &#8220;&lt;br&gt; Before Swaping: &#8220;.$a.&#8221; &#8220;.$b; swap($a,$b); \/\/ call&#46;&#46;&#46;<\/p>\n","protected":false},"author":86671,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31445],"tags":[31111,32389,21772,32390,32332,32333,32391],"class_list":["post-135481","post","type-post","status-publish","format-standard","hentry","category-php-tutorials","tag-call-by-reference","tag-call-by-reference-in-php","tag-php","tag-php-call-by-reference","tag-php-practical","tag-php-program","tag-php-program-on-call-by-reference"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Call by Reference in PHP - DataFlair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/call-by-reference-in-php\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Call by Reference in PHP - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 &lt;html&gt; &lt;head&gt;&lt;title&gt;PHP For Loops&lt;\/title&gt; &lt;body&gt; &lt;center&gt; &lt;?php function swap(&amp;$a,&amp;$b) \/\/ copy in local { $c=$a; $a=$b; $b=$c; } \/\/ call main $a=50; $b=30; echo &quot;&lt;br&gt; Before Swaping: &quot;.$a.&quot; &quot;.$b; swap($a,$b); \/\/ call&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/call-by-reference-in-php\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-13T07:05:57+00:00\" \/>\n<meta name=\"author\" content=\"TechVidvan Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"TechVidvan Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Call by Reference in PHP - DataFlair","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/data-flair.training\/blogs\/call-by-reference-in-php\/","og_locale":"en_US","og_type":"article","og_title":"Call by Reference in PHP - DataFlair","og_description":"Program 1 &lt;html&gt; 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