index.php

讲的是网络编程

<?php

class upgrade_2018 {

	var $usedFiles = array( );

	function isApplied() {
		return $this->check_config_type();
	}

	function apply() {
		return $this->apply_alter_tables();
	}

	function check_config_type() {
		$db = $GLOBALS['xoopsDB'];
		$sql = "SHOW COLUMNS FROM " . $db->prefix("config") . " LIKE 'conf_title'";
		$result = $db->queryF( $sql );
		while ($row = $db->fetchArray($result)) {
    		if (strtolower( trim($row["Type"]) ) == "varchar(255)") {
        		return true;
    		}
		}
		return false;
	}

	function query( $sql ) {
		echo $sql . "<br />";
		$db = $GLOBALS['xoopsDB'];
		if ( ! ( $ret = $db->queryF( $sql ) ) ) {
			echo $db->error();
		}
	}

	function apply_alter_tables() {
		$db = $GLOBALS['xoopsDB'];
		$this->fields = array(
            			"config" => array(
            			                "conf_title" => "varchar(255) NOT NULL default ''",
            			                "conf_desc"  => "varchar(255) NOT NULL default ''" 
            			                ),
            			"configcategory" => array( "confcat_name"  => "varchar(255) NOT NULL default ''" ),
            			);

		foreach( $this->fields as $table => $data ) {
			foreach ($data as $field => $property) {
				$sql = "ALTER TABLE " . $db->prefix($table) . " CHANGE `$field` `$field` $property";
				$this->query( $sql );
			}
		}
		return true;
	}
}

$upg = new upgrade_2018();
return $upg;

?>