Bind parameters with PDO in PHP

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parameters
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PDOStatement::bindValue() - Binds a value to a parameter,PDOStatement::bindParam — Binds a parameter to the specified variable name , bindParam , Name of the PHP variable to bind to the SQL statement parameter.

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PHP bindParam() binds a PHP variable to a corresponding named or question mark placeholder in the SQL statement that was used to prepare the statement.,PHP bindValue() binds a value to a corresponding named or question mark placeholder in the SQL statement that was used to prepare the statement., What does error reporting has to do with the binding of named parameters in prepared statements? – arielnmz Nov 11 '13 at 8:58 , Sorry for the loooooooong delay (I was not used to the side back in '13). The correct answer was: 1. That I can't use prep'd statements to define table or column names and 2. If I use a reference as a parameter I must use bindParam, and bindValue if I'm using a direct constant of the result of an expression, e.g. $var."foo". But this is a workaround and it's useful too. – arielnmz Jun 11 '14 at 3:39

Try using bindValue()

$STH - > bindValue(':id', '1', PDO::PARAM_STR);
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The PDOStatement::bindParam() function is an inbuilt function in PHP which is used to bind a parameter to the specified variable name. This function bound the variables, pass their value as input and receive the output value, if any, of their associated parameter marker.,The PDOStatement::bindValue() function is an inbuilt function in PHP which is used to bind a value to a parameter. This function binds a value to corresponding named or question mark placeholder in the SQL which is used to prepare the statement.,bindParam(): The bindParam() function binds a parameter to named or question mark placeholder in SQL statement.The bindParam () function is used to pass variable not value.,The bindParam() function binds a parameter to named or question mark placeholder in SQL statement.

Syntax:

bool PDOStatement::bindParam($parameter, $variable, $data_type, $length, $driver_options)

Syntax:

bool PDOStatement::bindValue($parameter, $value, $data_type)
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If the SQL statement returns one or more result sets, you can begin fetching rows from the statement resource by calling the PDOStatement::fetch or PDOStatement::fetchAll method.,To prepare and execute an SQL statement that includes parameter markers:,To prepare and execute an SQL statement that includes variable input, use the PDO::prepare, PDOStatement::bindParam, and PDOStatement::execute methods. Preparing a statement improves performance because the database server creates an optimized access plan for data retrieval that it can reuse if the statement is executed again. ,Call the PDOStatement::execute method, optionally passing an array that contains the values to use in place of the parameter markers, either in order for question mark parameter markers, or as a :name => value associative array for named parameter markers. For more information about the PDO API, see http://php.net/manual/en/book.pdo.php.

Prepare and execute a statement that includes variable input.

$sql = "SELECT firstnme, lastname FROM employee WHERE bonus > ? AND bonus < ?";
$stmt = $conn - > prepare($sql);
if (!$stmt) {
   // Handle errors
}

// Explicitly bind parameters
$stmt - > bindParam(1, $_POST['lower']);
$stmt - > bindParam(2, $_POST['upper']);

$stmt - > execute($stmt);

// Invoke statement again using dynamically bound parameters
$stmt - > execute($stmt, array($_POST['lower'], $_POST['upper']));
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&$variable: The (mixed) name of the PHP variable to bind to the SQL statement parameter.,$data_type: An optional (integer) PDO::PARAM_* constant. Default is PDO::PARAM_STR.,Binds a parameter to a named or question mark placeholder in the SQL statement.,$length: An optional (integer) length of the data type. You can specify PDO::SQLSRV_PARAM_OUT_DEFAULT_SIZE to indicate the default size when using PDO::PARAM_INT or PDO::PARAM_BOOL in $data_type.

Syntax

  bool PDOStatement::bindParam($parameter, & $variable[, $data_type[, $length[, $driver_options]]]);
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PDOStatement::bindParam — Binds a parameter to the specified variable name ,(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.1.0),PDOStatement::bindValue() - Binds a value to a parameter, Name of the PHP variable to bind to the SQL statement parameter.

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To construct a prepared statement in PDO, you follow these steps:,This is why the bindParam() method comes into play.,The bindValue() method has three parameters:,Home » PHP PDO » PHP Prepared Statement

First, create a template SQL statement. For example:

.wp - block - code {
      border: 0;
      padding: 0;
   }

   .wp - block - code > div {
      overflow: auto;
   }

   .shcb - language {
      border: 0;
      clip: rect(1 px, 1 px, 1 px, 1 px); -
      webkit - clip - path: inset(50 % );
      clip - path: inset(50 % );
      height: 1 px;
      margin: -1 px;
      overflow: hidden;
      padding: 0;
      position: absolute;
      width: 1 px;
      word - wrap: normal;
      word - break: normal;
   }

   .hljs {
      box - sizing: border - box;
   }

   .hljs.shcb - code - table {
      display: table;
      width: 100 % ;
   }

   .hljs.shcb - code - table > .shcb - loc {
      color: inherit;
      display: table - row;
      width: 100 % ;
   }

   .hljs.shcb - code - table.shcb - loc > span {
      display: table - cell;
   }

   .wp - block - code code.hljs: not(.shcb - wrap - lines) {
      white - space: pre;
   }

   .wp - block - code code.hljs.shcb - wrap - lines {
      white - space: pre - wrap;
   }

   .hljs.shcb - line - numbers {
      border - spacing: 0;
      counter - reset: line;
   }

   .hljs.shcb - line - numbers > .shcb - loc {
      counter - increment: line;
   }

   .hljs.shcb - line - numbers.shcb - loc > span {
      padding - left: 0.75 em;
   }

   .hljs.shcb - line - numbers.shcb - loc::before {
      border - right: 1 px solid #ddd;
      content: counter(line);
      display: table - cell;
      padding: 0 0.75 em;
      text - align: right; -
      webkit - user - select: none; -
      moz - user - select: none; -
      ms - user - select: none;
      user - select: none;
      white - space: nowrap;
      width: 1 % ;
   }
$sql = 'insert into authors(first_name, last_name)
values( ? , ? )
';Code language: PHP (php)
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