PHP mysqli: stmt_init() function
mysqli_stmt_init() function / mysqli::stmt_init
The mysqli_stmt_init() function / mysqli::stmt_init initializes a statement and returns an object suitable for mysqli_stmt_prepare().
Syntax:
Object oriented style
mysqli_stmt mysqli::stmt_init ( void )
Procedural style
mysqli_stmt mysqli_stmt_init ( mysqli $link )
Parameter:
Name | Description | Required/Optional | |
---|---|---|---|
link | A link identifier returned by mysqli_connect() or mysqli_init() | Required for procedural style only and Optional for Object oriented style |
Usage: Procedural style
mysqli_stmt_init(connection);
Parameter:
Name | Description | Required/Optional |
---|---|---|
connection | Specifies the MySQL connection to use | Required |
Return value:
Returns an object.
Version: PHP 5, PHP 7
Example:
<?php
$con=mysqli_connect("localhost","user1","datasoft123","hr");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$city="Paris";
// Create a prepared statement
$stmt=mysqli_stmt_init($con);
if (mysqli_stmt_prepare($stmt,"SELECT District FROM City WHERE Name=?"))
{
// Bind parameters
mysqli_stmt_bind_param($stmt,"s",$city);
// Execute query
mysqli_stmt_execute($stmt);
// Bind result variables
mysqli_stmt_bind_result($stmt,$district);
// Fetch value
mysqli_stmt_fetch($stmt);
printf("%s is in district %s",$city,$district);
// Close statement
mysqli_stmt_close($stmt);
}
mysqli_close($con);
?>
Sample Output:
System status: Uptime: 15909 Threads: 2 Questions: 112 Slow queries: 0 Opens: 16 Flush tables: 1 Open tables: 0 Queries per second avg: 0.7
See also
Previous: stat
Next: store_result
PHP: Tips of the Day
var_export(): var_export() dumps a PHP parseable representation of the item.
You can pass true as the second parameter to return the contents into a variable.
Example:
<?php $myarray = [ "PHP", "Tips" ]; $mystring = "PHP Tips"; $myint = 28; var_export($myarray); var_export($mystring); var_export($myint); ?>
Output:
array ( 0 => 'PHP', 1 => 'Tips', )'PHP Tips'28
To put the content into a variable, you can do this:
$array_export = var_export($myarray, true); $string_export = var_export($mystring, true); $int_export = var_export($myint, 1); // any `Truthy` value
After that, you can output it like this:
printf('$myarray = %s; %s', $array_export, PHP_EOL); printf('$mystring = %s; %s', $string_export, PHP_EOL); printf('$myint = %s; %s', $int_export, PHP_EOL);
Example:
<?php $myarray = [ "PHP", "Tips" ]; $mystring = "PHP Tips"; $myint = 28; $array_export = var_export($myarray, true); $string_export = var_export($mystring, true); $int_export = var_export($myint, 1); printf('$myarray = %s; %s', $array_export, PHP_EOL); printf('$mystring = %s; %s', $string_export, PHP_EOL); printf('$myint = %s; %s', $int_export, PHP_EOL); ?>
This will produce the following output:
Output:
$myarray = array ( 0 => 'PHP', 1 => 'Tips', ); $mystring = 'PHP Tips'; $myint = 28;
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