Unsorted

PHP

PHP: Beware with equations of strings and integers: "5909;"==5909 This is true!

Array keys with REAL values must be converted to strings: Use $f[(string)10.7]. Without conversion it will be interpreted as $f[10].

mysqli_report(MYSQLI_REPORT_ALL); can stop PHP scripts on MySQL errors without reporting

Dira Startrack Edit Range

In Display_Max_Level

PgAdmin III 1.18

How to select a field and edit data with a keyboard shortcut (without mouse-click) in the edit window: Press F2 (not ducumented)

nmap installation conflicts

After installing nmap v 7.70 (Windows installer for the network mapping tool) my Windows 7 system had severe network problems. Local postgres database was unconnectable. Internet only worked after closing all postgres procedures. It was neccessary to set the system back to a restore point.

CURL command line: Caution

Do not end a request with -H (linefeed) in your request header. Many servers will not respond.

Postgres OIDs are not permanent

It's not a good idea to use OID for relational databases. My experience is that the system chenges them occasionally. Maybe it's a consequence of a VACUUM but I'm not sure