Example Page<\/title>\r\n<\/head>\r\n<body>\r\n\t<?php\r\n\t\techo \"Hello World!\";\r\n\t?>\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n<h2>PHP variables<\/h2>\n<p>A variable means holder of some kind of data, in PHP, a variable starts with the $ sign, followed by the name of the variable.<br \/>\n<strong>php variable naming rules<\/strong><br \/>\nPHP variables must start with a letter or underscore “_”.<br \/>\nPHP variables may only be comprised of alpha-numeric characters and underscores. a-z, A-Z, 0-9<br \/>\nVariables with more than one word should be separated with underscores. $my_name<\/p>\n<p>example of declaring PHP variable are as follows.<\/p>\n<pre lang=\"php\">\r\n<?php\r\n\t$my_name = \"My Name is John\";\r\n\t$number = 10;\r\n\t$anotherNumber =5;\r\n?>\r\n<\/pre>\n<h2>PHP echo and print statements<\/h2>\n<p>You can output the results in PHP by using either echo or print statements. Both are almost same the difference is echo can take multiple parameters while print can take one argument. <\/p>\n<pre lang=\"php\">\r\n\r\n<?php\r\n\t$data = \"Hello World!\";\r\n\techo $data;\r\n\t\r\n\techo \"<h1>Hello World!<\/h1><br>\";\r\n\t\r\n\t\/\/ using print Statement\r\n\t\r\n\tprint \"Hello world!\";\r\n?>\r\n\r\n<\/pre>\n<h2>PHP strings<\/h2>\n<p>In PHP you can create a variable and store string directly to it.Example of creating strings in PHP are as below.<\/p>\n<pre lang=\"php\">\r\n<?php\r\n\t$string_1 = \"This is a string in double quotes\";\r\n\t$string_0 = \"\"; \/\/ a string with zero characters\r\n\r\n echo $string_1;\r\n\r\n?>\r\n<\/pre>\n<h2>PHP integer<\/h2>\n<p>An integer is a whole number (without decimals). It is a number between -2,147,483,648 and +2,147,483,647.<\/p>\n<p><strong>Rules for integers<\/strong><\/p>\n<ul>\n<li>An integer must have at least one digit (0-9)<\/li>\n<li>An integer cannot contain comma or blanks<\/li>\n<li>An integer must not have a decimal point<\/li>\n<li>An integer can be either positive or negative<\/li>\n<\/ul>\n<p>Example of PHP Integer<\/p>\n<pre lang=\"php\">\r\n\r\n<?php\r\n\t$int_var = 12345;\r\n\t$another_int = -12345 + 12345;\r\n?>\r\n<\/pre>\n<h2>PHP operators<\/h2>\n<p>Operators are used to manipulate or perform operations on variables and values. PHP operators are mainly classified as below.<\/p>\n<ul>\n<li>Assignment Operators<\/li>\n<li>Arithmetic Operators<\/li>\n<li>Comparison Operators<\/li>\n<li>String Operators<\/li>\n<li>Combination Arithmetic & Assignment Operators<\/li>\n<\/ul>\n<h2>PHP include and require statements<\/h2>\n<p>You can combine one PHP file into another PHP file with the include or require statement. Examples for include and require statements are below.<\/p>\n<pre lang=\"php\">\r\n\r\n<?php \r\n\tinclude(\"navigation.php\"); \r\n?>\r\n\r\n<?php\r\n $path = $_SERVER['DOCUMENT_ROOT'];\r\n $path .= \"\/common\/header.php\";\r\n include_once($path);\r\n?>\r\n\r\n<?php\r\n\trequire 'navigation.php';\r\n?>\r\n\r\n<\/pre>\n<h2>PHP If…Else Statement<\/h2>\n<p>If….else statement in PHP is using for execute some code if a condition is true and another code if a condition is false.Example of PHP If…Else Statement is below.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t$date=date(\"D\");\r\n\t\tif ($date==\"Fri\")\r\n\t\t echo \"Have a nice weekend!\"; \r\n\t\telse\r\n\t\t echo \"Have a nice day!\"; \r\n\t?>\r\n\r\n<\/pre>\n<h2>PHP Switch statement<\/h2>\n<p>If you want to select one of many blocks of code to be executed, use the Switch statement.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$date=date(\"D\");\r\n\t\tswitch ($date)\r\n\t\t{\r\n\t\tcase \"Mon\":\r\n\t\t echo \"Today is Monday\";\r\n\t\t break;\r\n\t\tcase \"Tue\":\r\n\t\t echo \"Today is Tuesday\";\r\n\t\t break;\r\n\t\tcase \"Wed\":\r\n\t\t echo \"Today is Wednesday\";\r\n\t\t break;\r\n\t\tcase \"Thu\":\r\n\t\t echo \"Today is Thursday\";\r\n\t\t break;\r\n\t\tcase \"Fri\":\r\n\t\t echo \"Today is Friday\";\r\n\t\t break;\r\n\t\tcase \"Sat\":\r\n\t\t echo \"Today is Saturday\";\r\n\t\t break;\r\n\t\tcase \"Sun\":\r\n\t\t echo \"Today is Sunday\";\r\n\t\t break;\r\n\t\tdefault:\r\n\t\t echo \"No such day in calender\";\r\n\t\t}\r\n\t?>\r\n\r\n<\/pre>\n<h2>PHP for loop statement<\/h2>\n<p>Loops in PHP are used to execute the same block of code a specified number of times. PHP supports for, while, do…while and foreach loops. Example of for loop statement are below.<\/p>\n<pre lang=\"php\">\r\n\r\n<?php\r\n\t$a = 0;\r\n\t$b = 0;\r\n\t\r\n\tfor( $i=0; $i<5; $i++ )\r\n\t{\r\n\t\t$a += 10;\r\n\t\t$b += 5;\r\n\t}\r\n\techo (\"At the end of the loop a=$a and b=$b\" );\r\n?>\r\n\r\n<\/pre>\n<h2>PHP while loop statement<\/h2>\n<p>The while statement will execute a block of code if and as long as a test expression is true.Below is an example of PHP while loop.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$i = 0;\r\n\t\t$num = 50;\r\n\t\t\r\n\t\twhile( $i < 10)\r\n\t\t{\r\n\t\t $num--;\r\n\t\t $i++;\r\n\t\t}\r\n\t\techo (\"Loop stopped at i = $i and num = $num\" );\r\n\t?>\r\n\t\r\n<\/pre>\n<h2>PHP do…while loop statement<\/h2>\n<p>The do…while statement will execute a block of code at least once – it then will repeat the loop as long as a condition is true.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$i = 0;\r\n\t\t$num = 0;\r\n\t\tdo\r\n\t\t{\r\n\t\t $i++;\r\n\t\t}while( $i < 10 );\r\n\t\techo (\"Loop stopped at i = $i\" );\r\n\t?>\r\n\t\r\n<\/pre>\n<h2>PHP foreach loop statement<\/h2>\n<p>The foreach loop works only on arrays, and is used to loop through each key\/value pair in an array.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$array = array( 1, 2, 3, 4, 5);\r\n\t\tforeach( $array as $value )\r\n\t\t{\r\n\t\t echo \"Value is $value <br \/>\";\r\n\t\t}\r\n\t?>\t\r\n\t\r\n<\/pre>\n<h2>PHP break statement<\/h2>\n<p>The PHP break keyword is used to terminate the execution of a loop prematurely.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$i = 0;\r\n\t\t\r\n\t\twhile( $i < 10)\r\n\t\t{\r\n\t\t $i++;\r\n\t\t if( $i == 3 )break;\r\n\t\t}\r\n\t\techo (\"Loop stopped at i = $i\" );\r\n\t?>\r\n\t\r\n<\/pre>\n<h2>PHP continue statement<\/h2>\n<p> The PHP continue keyword is used to halt the current iteration of a loop but it does not terminate the loop.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$array = array( 1, 2, 3, 4, 5);\r\n\t\tforeach( $array as $value )\r\n\t\t{\r\n\t\t if( $value == 3 )continue;\r\n\t\t echo \"Value is $value <br \/>\";\r\n\t\t}\r\n\t?>\t\r\n\t\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>PHP is one of the most popular programming languages used on the internet for developing web applications. In this post we are sharing the basics of PHP including from Syntax, saving a PHP page, examples of PHP variables and usage and its naming rules etc. This tutorial is for those who are beginner s in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[44],"tags":[72,48],"yoast_head":"\n<title>Learn PHP - PHP basics and tutorial - Vishmax.com<\/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:\/\/www.vishmax.com\/en\/labs\/learn-php-php-basics-and-tutorial\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Learn PHP - PHP basics and tutorial - Vishmax.com\" \/>\n<meta property=\"og:description\" content=\"PHP is one of the most popular programming languages used on the internet for developing web applications. 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PHP is one of the most popular programming languages used on the internet for developing web applications. In this post we are sharing the basics of PHP including from Syntax, saving a PHP page, examples of PHP variables and usage and its naming rules etc. This tutorial is for those who are beginner s in PHP programming. By mastering the basics of PHP language you can build stunning web applications.<\/p>\n

PHP Syntax Overview<\/h2>\n

The global effective PHP tag style is as below.<\/p>\n

\r\n\r\n<\/pre>\nhow to save your PHP pages<\/h2>\nAll php files must save with .php extension instead of the standard .html extension.<\/p>\n
Commenting PHP Code<\/h2>\nCommenting in programming means making a portion readable only for human and it will not execute while running the program. This is very useful in advanced developing because it gives clear idea to others what are you aiming with codes. In PHP there are several ways of commenting , examples are as below.<\/p>\n
\r\n\r\n<\/pre>\nExample of combining PHP and HTML<\/h2>\nPHP is an HTML-embedded server-side scripting language. Most of its syntax is borrowed from C. In web development you need to combine PHP and HTML and here is the example for doing it.<\/p>\n
\r\n\r\n\r\nExample Page<\/title>\r\n<\/head>\r\n<body>\r\n\t<?php\r\n\t\techo \"Hello World!\";\r\n\t?>\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n<h2>PHP variables<\/h2>\n<p>A variable means holder of some kind of data, in PHP, a variable starts with the $ sign, followed by the name of the variable.<br \/>\n<strong>php variable naming rules<\/strong><br \/>\nPHP variables must start with a letter or underscore “_”.<br \/>\nPHP variables may only be comprised of alpha-numeric characters and underscores. a-z, A-Z, 0-9<br \/>\nVariables with more than one word should be separated with underscores. $my_name<\/p>\n<p>example of declaring PHP variable are as follows.<\/p>\n<pre lang=\"php\">\r\n<?php\r\n\t$my_name = \"My Name is John\";\r\n\t$number = 10;\r\n\t$anotherNumber =5;\r\n?>\r\n<\/pre>\n<h2>PHP echo and print statements<\/h2>\n<p>You can output the results in PHP by using either echo or print statements. Both are almost same the difference is echo can take multiple parameters while print can take one argument. <\/p>\n<pre lang=\"php\">\r\n\r\n<?php\r\n\t$data = \"Hello World!\";\r\n\techo $data;\r\n\t\r\n\techo \"<h1>Hello World!<\/h1><br>\";\r\n\t\r\n\t\/\/ using print Statement\r\n\t\r\n\tprint \"Hello world!\";\r\n?>\r\n\r\n<\/pre>\n<h2>PHP strings<\/h2>\n<p>In PHP you can create a variable and store string directly to it.Example of creating strings in PHP are as below.<\/p>\n<pre lang=\"php\">\r\n<?php\r\n\t$string_1 = \"This is a string in double quotes\";\r\n\t$string_0 = \"\"; \/\/ a string with zero characters\r\n\r\n        echo $string_1;\r\n\r\n?>\r\n<\/pre>\n<h2>PHP integer<\/h2>\n<p>An integer is a whole number (without decimals). It is a number between -2,147,483,648 and +2,147,483,647.<\/p>\n<p><strong>Rules for integers<\/strong><\/p>\n<ul>\n<li>An integer must have at least one digit (0-9)<\/li>\n<li>An integer cannot contain comma or blanks<\/li>\n<li>An integer must not have a decimal point<\/li>\n<li>An integer can be either positive or negative<\/li>\n<\/ul>\n<p>Example of PHP Integer<\/p>\n<pre lang=\"php\">\r\n\r\n<?php\r\n\t$int_var = 12345;\r\n\t$another_int = -12345 + 12345;\r\n?>\r\n<\/pre>\n<h2>PHP operators<\/h2>\n<p>Operators are used to manipulate or perform operations on variables and values. PHP operators are mainly classified as below.<\/p>\n<ul>\n<li>Assignment Operators<\/li>\n<li>Arithmetic Operators<\/li>\n<li>Comparison Operators<\/li>\n<li>String Operators<\/li>\n<li>Combination Arithmetic & Assignment Operators<\/li>\n<\/ul>\n<h2>PHP include and require statements<\/h2>\n<p>You can combine one PHP file into another PHP file with the include or require statement. Examples for include and require statements are below.<\/p>\n<pre lang=\"php\">\r\n\r\n<?php \r\n\tinclude(\"navigation.php\"); \r\n?>\r\n\r\n<?php\r\n   $path = $_SERVER['DOCUMENT_ROOT'];\r\n   $path .= \"\/common\/header.php\";\r\n   include_once($path);\r\n?>\r\n\r\n<?php\r\n\trequire 'navigation.php';\r\n?>\r\n\r\n<\/pre>\n<h2>PHP If…Else Statement<\/h2>\n<p>If….else statement in PHP is using for execute some code if a condition is true and another code if a condition is false.Example of PHP If…Else Statement is below.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t$date=date(\"D\");\r\n\t\tif ($date==\"Fri\")\r\n\t\t  echo \"Have a nice weekend!\"; \r\n\t\telse\r\n\t\t  echo \"Have a nice day!\"; \r\n\t?>\r\n\r\n<\/pre>\n<h2>PHP Switch statement<\/h2>\n<p>If you want to select one of many blocks of code to be executed, use the Switch statement.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$date=date(\"D\");\r\n\t\tswitch ($date)\r\n\t\t{\r\n\t\tcase \"Mon\":\r\n\t\t  echo \"Today is Monday\";\r\n\t\t  break;\r\n\t\tcase \"Tue\":\r\n\t\t  echo \"Today is Tuesday\";\r\n\t\t  break;\r\n\t\tcase \"Wed\":\r\n\t\t  echo \"Today is Wednesday\";\r\n\t\t  break;\r\n\t\tcase \"Thu\":\r\n\t\t  echo \"Today is Thursday\";\r\n\t\t  break;\r\n\t\tcase \"Fri\":\r\n\t\t  echo \"Today is Friday\";\r\n\t\t  break;\r\n\t\tcase \"Sat\":\r\n\t\t  echo \"Today is Saturday\";\r\n\t\t  break;\r\n\t\tcase \"Sun\":\r\n\t\t  echo \"Today is Sunday\";\r\n\t\t  break;\r\n\t\tdefault:\r\n\t\t  echo \"No such day in calender\";\r\n\t\t}\r\n\t?>\r\n\r\n<\/pre>\n<h2>PHP for loop statement<\/h2>\n<p>Loops in PHP are used to execute the same block of code a specified number of times. PHP supports for, while, do…while  and foreach loops. Example of for loop statement are below.<\/p>\n<pre lang=\"php\">\r\n\r\n<?php\r\n\t$a = 0;\r\n\t$b = 0;\r\n\t\r\n\tfor( $i=0; $i<5; $i++ )\r\n\t{\r\n\t\t$a += 10;\r\n\t\t$b += 5;\r\n\t}\r\n\techo (\"At the end of the loop a=$a and b=$b\" );\r\n?>\r\n\r\n<\/pre>\n<h2>PHP while loop statement<\/h2>\n<p>The while statement will execute a block of code if and as long as a test expression is true.Below is an example of PHP while loop.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$i = 0;\r\n\t\t$num = 50;\r\n\t\t\r\n\t\twhile( $i < 10)\r\n\t\t{\r\n\t\t   $num--;\r\n\t\t   $i++;\r\n\t\t}\r\n\t\techo (\"Loop stopped at i = $i and num = $num\" );\r\n\t?>\r\n\t\r\n<\/pre>\n<h2>PHP do…while loop statement<\/h2>\n<p>The do…while statement will execute a block of code at least once – it then will repeat the loop as long as a condition is true.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$i = 0;\r\n\t\t$num = 0;\r\n\t\tdo\r\n\t\t{\r\n\t\t  $i++;\r\n\t\t}while( $i < 10 );\r\n\t\techo (\"Loop stopped at i = $i\" );\r\n\t?>\r\n\t\r\n<\/pre>\n<h2>PHP foreach loop statement<\/h2>\n<p>The foreach loop works only on arrays, and is used to loop through each key\/value pair in an array.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$array = array( 1, 2, 3, 4, 5);\r\n\t\tforeach( $array as $value )\r\n\t\t{\r\n\t\t  echo \"Value is $value <br \/>\";\r\n\t\t}\r\n\t?>\t\r\n\t\r\n<\/pre>\n<h2>PHP break statement<\/h2>\n<p>The PHP break keyword is used to terminate the execution of a loop prematurely.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$i = 0;\r\n\t\t\r\n\t\twhile( $i < 10)\r\n\t\t{\r\n\t\t   $i++;\r\n\t\t   if( $i == 3 )break;\r\n\t\t}\r\n\t\techo (\"Loop stopped at i = $i\" );\r\n\t?>\r\n\t\r\n<\/pre>\n<h2>PHP continue statement<\/h2>\n<p> The PHP continue keyword is used to halt the current iteration of a loop but it does not terminate the loop.<\/p>\n<pre lang=\"php\">\r\n\r\n\t<?php\r\n\t\t$array = array( 1, 2, 3, 4, 5);\r\n\t\tforeach( $array as $value )\r\n\t\t{\r\n\t\t  if( $value == 3 )continue;\r\n\t\t  echo \"Value is $value <br \/>\";\r\n\t\t}\r\n\t?>\t\r\n\t\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>PHP is one of the most popular programming languages used on the internet for developing web applications. In this post we are sharing the basics of PHP including from Syntax, saving a PHP page, examples of PHP variables and usage and its naming rules etc. This tutorial is for those who are beginner s in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[44],"tags":[72,48],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.2.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Learn PHP - PHP basics and tutorial - Vishmax.com<\/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:\/\/www.vishmax.com\/en\/labs\/learn-php-php-basics-and-tutorial\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Learn PHP - PHP basics and tutorial - Vishmax.com\" \/>\n<meta property=\"og:description\" content=\"PHP is one of the most popular programming languages used on the internet for developing web applications. 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