recherches récentes:
incluez les fonctions ,
fonctions variables ,
fonctions de poteau...
Si vous êtes nouveau au PHP ou devez juste régénérer vos qualifications, c'est l'endroit à commencer. Cette série de cours d'instruction te donnera la connaissance de base que vous devrez créer un simple Site Web de PHP.
Le PHP est un langage de programmation r3fléchissant à l'origine conçu pour produire les pages Web dynamiques. [1] Le PHP est employé principalement dans le serveur-côté scripting, mais peut être employé d'une ligne de commande interface ou dans des applications graphiques autonomes. Des interfaces utilisateurs textuelles peuvent également être créées utilisant des ncurses.
(PHP 4, PHP 5, PECL mysql:1.0)
mysql_field_len — Retourne la taille d'un champ de résultat MySQL
mysql_field_len() retourne la taille du champ spécifié.
La ressource de résultat qui vient d'être évaluée. Ce résultat vient de l'appel à la fonction mysql_query().
La position numérique du champ. field_offset commence à 0. Si field_offset n'existe pas, une alerte E_WARNING sera également générée.
Le taille de l'index du champs spécifié en cas de succès, ou FALSE si une erreur survient.
Exemple #1 Exemple avec mysql_field_len()
<?php
$result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
if (!$result) {
echo 'Impossible d\'exécuter la requête : ' . mysql_error();
exit;
}
// Récupère la longueur du champ id dans la base de données.
$length = mysql_field_len($result, 0);
echo $length;
?>
Note: Pour des raisons de compatibilité ascendante, l'alias obsolète suivant peut être utilisé : mysql_fieldlen()
Des autres fonctions utiles :
ref.pdo-mysql | ref.pdo-mysql.connection | ref.mysqli | ref.mysql | mysqli.warning-count | mysqli.use-result | mysqli.thread-safe | mysqli.thread-id | mysqli.store-result | mysqli.stmt-init | mysqli.stat | mysqli.ssl-set | mysqli.sqlstate | mysqli.setup | mysqli.set-local-infile-handler | mysqli.set-local-infile-default | mysqli.set-charset | mysqli.select-db | mysqli.rollback | mysqli.resources | mysqli.real-query | mysqli.real-escape-string | mysqli.real-connect | mysqli.query | mysqli.prepare | mysqli.ping | mysqli.options | mysqli.next-result | mysqli.multi-query | mysqli.more-results | mysqli.kill | mysqli.installation | mysqli.insert-id | mysqli.init | mysqli.info | mysqli.get-warnings | mysqli.get-server-version | mysqli.get-server-info | mysqli.get-proto-info | mysqli.get-host-info | mysqli.get-client-version | mysqli.get-client-info | mysqli.get-charset | mysqli.field-count | mysqli.error | mysqli.errno | mysqli.dump-debug-info | mysqli.debug | mysqli.constants | mysqli.connect | mysqli.connect-error | mysqli.connect-errno | mysqli.configuration | mysqli.commit | mysqli.close | mysqli.character-set-name | mysqli.change-user | mysqli.autocommit | mysqli.affected-rows | mysqli-stmt.store-result | mysqli-stmt.sqlstate | mysqli-stmt.send-long-data | mysqli-stmt.result-metadata | mysqli-stmt.reset | mysqli-stmt.prepare | mysqli-stmt.param-count | mysqli-stmt.num-rows | mysqli-stmt.insert-id | mysqli-stmt.get-warnings | mysqli-stmt.free-result | mysqli-stmt.field-count | mysqli-stmt.fetch | mysqli-stmt.execute | mysqli-stmt.error | mysqli-stmt.errno | mysqli-stmt.data-seek | mysqli-stmt.close | mysqli-stmt.bind-result | mysqli-stmt.bind-param | mysqli-stmt.attr-set | mysqli-stmt.attr-get | mysqli-stmt.affected-rows | mysqli-result.num-rows | mysqli-result.lengths | mysqli-result.free | mysqli-result.field-seek | mysqli-result.field-count | mysqli-result.fetch-row | mysqli-result.fetch-object | mysqli-result.fetch-fields | mysqli-result.fetch-field | mysqli-result.fetch-field-direct | mysqli-result.fetch-assoc | mysqli-result.fetch-array | mysqli-result.data-seek | mysqli-result.current-field | mysqli-driver.embedded-server-start | mysqli-driver.embedded-server-end | mysql.setup | mysql.resources | mysql.installation | mysql.examples | mysql.constants | mysql.configuration | intro.mysqli | intro.mysql | function.mysqli-slave-query | function.mysqli-set-opt | function.mysqli-send-query | function.mysqli-send-long-data | function.mysqli-rpl-query-type | function.mysqli-rpl-probe | function.mysqli-rpl-parse-enabled | function.mysqli-report | function.mysqli-param-count | function.mysqli-master-query | function.mysqli-get-metadata | function.mysqli-fetch | function.mysqli-execute | function.mysqli-escape-string | function.mysqli-enable-rpl-parse | function.mysqli-enable-reads-from-master | function.mysqli-disable-rpl-parse | function.mysqli-disable-reads-from-master | function.mysqli-client-encoding | function.mysqli-bind-result | function.mysqli-bind-param | function.mysql-unbuffered-query | function.mysql-thread-id | function.mysql-tablename | function.mysql-stat | function.mysql-set-charset | function.mysql-select-db | function.mysql-result | function.mysql-real-escape-string | function.mysql-query | function.mysql-ping | function.mysql-pconnect | function.mysql-num-rows | function.mysql-num-fields | function.mysql-list-tables | function.mysql-list-processes | function.mysql-list-fields | function.mysql-list-dbs | function.mysql-insert-id | function.mysql-info | function.mysql-get-server-info | function.mysql-get-proto-info | function.mysql-get-host-info | function.mysql-get-client-info | function.mysql-free-result | function.mysql-field-type | function.mysql-field-table | function.mysql-field-seek | function.mysql-field-name | function.mysql-field-len | function.mysql-field-flags | function.mysql-fetch-row | function.mysql-fetch-object | function.mysql-fetch-lengths | function.mysql-fetch-field | function.mysql-fetch-assoc | function.mysql-fetch-array | function.mysql-escape-string | function.mysql-error | function.mysql-errno | function.mysql-drop-db | function.mysql-db-query | function.mysql-db-name | function.mysql-data-seek | function.mysql-create-db | function.mysql-connect | function.mysql-close | function.mysql-client-encoding | function.mysql-change-user | function.mysql-affected-rows | class.mysqli | class.mysqli-stmt | class.mysqli-result | class.mysqli-driver | book.mysqli | book.mysql |
Le PHP est une langue scripting d'usage universel employée couramment qui approprié particulièrement au développement de Web et peut être enfoncée dans le HTML. Si vous êtes nouveau au PHP et voulez avoir une certaine idée de la façon dont cela fonctionne, essayez le cours d'instruction d'introduction. Après ce, vérifiez le manuel en ligne, et l'exemple archivez les emplacements et certaines des autres ressources disponibles dans la section de liens.