{"id":6239,"date":"2022-09-02T07:03:36","date_gmt":"2022-09-02T01:33:36","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-php-username-that-checks-on-database-username-already-taken-duplicate\/"},"modified":"2022-09-02T07:03:36","modified_gmt":"2022-09-02T01:33:36","slug":"solved-php-username-that-checks-on-database-username-already-taken-duplicate","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-php-username-that-checks-on-database-username-already-taken-duplicate\/","title":{"rendered":"[Solved] php username that checks on database “username already taken” [duplicate]"},"content":{"rendered":"

[ad_1]
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Please use below code to fix your problem<\/p>\n

<?php\n\n    if(empty($_POST['username'])){\n      $username_error = \"Please Input Username\";\n    }else{\n      if( 6 > mb_strlen($_POST['username']) || 20 < mb_strlen($_POST['username'])){\n        $username_error = \"username must be at least 6 characters.\";\n      }else{\n          $username = $_POST['username'];\n          $sql = \"SELECT\n                members.username\n                FROM\n                members\n                WHERE username=\"\". $username.\"\"\";\n          $res = mysql_query($sql);\n          if($res && mysql_num_rows($res) > 0){\n            $username_exists = \"Username is already taken.\";\n          }else{\n            $username = $_POST['username'];\n          }\n      }     \n    }\n<\/code><\/pre>\n
?<\/p>\n<\/p><\/div>\n
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            11<\/span> <\/p><\/div>\n<\/div>\n
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solved php username that checks on database “username already taken” [duplicate] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Please use below code to fix your problem <?php if(empty($_POST[‘username’])){ $username_error = “Please Input Username”; }else{ if( 6 > mb_strlen($_POST[‘username’]) || 20 < mb_strlen($_POST[‘username’])){ $username_error = “username must be at least 6 characters.”; }else{ $username = $_POST[‘username’]; $sql = “SELECT members.username FROM members WHERE username=””. $username.”””; $res = mysql_query($sql); if($res && mysql_num_rows($res) > 0){ … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[797,340,339],"class_list":["post-6239","post","type-post","status-publish","format-standard","hentry","category-solved","tag-forms","tag-mysql","tag-php"],"yoast_head":"\n[Solved] php username that checks on database "username already taken" [duplicate] - JassWeb<\/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:\/\/jassweb.com\/solved\/solved-php-username-that-checks-on-database-username-already-taken-duplicate\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] php username that checks on database "username already taken" [duplicate] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Please use below code to fix your problem <?php if(empty($_POST['username'])){ $username_error = "Please Input Username"; }else{ if( 6 > mb_strlen($_POST['username']) || 20 < mb_strlen($_POST['username'])){ $username_error = "username must be at least 6 characters."; }else{ $username = $_POST['username']; $sql = "SELECT members.username FROM members WHERE username="". $username."""; $res = mysql_query($sql); if($res && mysql_num_rows($res) > 0){ ... 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