CascadiaPHP 2024

sqlsrv_num_fields

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sqlsrv_num_fieldsRetrieves the number of fields (columns) on a statement

Descripción

sqlsrv_num_fields(resource $stmt): mixed

Retrieves the number of fields (columns) on a statement.

Parámetros

stmt

The statement for which the number of fields is returned. sqlsrv_num_fields() can be called on a statement before or after statement execution.

Valores devueltos

Returns the number of fields on success. Returns false otherwise.

Ejemplos

Ejemplo #1 sqlsrv_num_fields() example

<?php
$serverName
= "serverName\sqlexpress";
$connectionInfo = array( "Database"=>"dbName", "UID"=>"username", "PWD"=>"password");
$conn = sqlsrv_connect( $serverName, $connectionInfo);
if(
$conn === false ) {
die(
print_r( sqlsrv_errors(), true));
}

$sql = "SELECT * FROM Table_1";
$stmt = sqlsrv_query($conn, $sql);
if(
$stmt === false) {
die(
print_r( sqlsrv_errors(), true));
}

$numFields = sqlsrv_num_fields( $stmt );

while(
sqlsrv_fetch( $stmt )) {
// Iterate through the fields of each row.
for($i = 0; $i < $numFields; $i++) {
echo
sqlsrv_get_field($stmt, $i)." ";
}
echo
"<br />";
}
?>

Ver también

  • sqlsrv_field_metadata() - Obtiene la metadata de los campos de una consulta preparada por sqlsrv_prepare o sqlsrv_query
  • sqlsrv_fetch() - Hace que esté disponible para ser leída la siguiente fila del conjunto de resultado
  • sqlsrv_get_field() - Gets field data from the currently selected row

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