migration-truefalse - mehr auf php-manual.net

Function `TRUE`/false return values

Most internal functions have been rewritten so they return TRUE when successful and FALSE when failing, as opposed to 0 and -1 in PHP/FI 2.0, respectively. The new behaviour allows for more logical code, like $fp = fopen("/your/file") or fail("darn!");. Because PHP/FI 2.0 had no clear rules for what functions should return when they failed, most such scripts will probably have to be checked manually after using the 2.0 to 3.0 convertor.

Example#1 Migration von 2.0: Rückgabewerte, alter Code


$fp = fopen($file, "r");
if ($fp == -1);
    echo("Konnte $file zum lesen nicht &ouml;ffnen&lt;br&gt;\n");
endif;

Example#2 Migration von 2.0: Rückgabewerte, neuer Code


$fp = @fopen($file, "r") or print("Konnte $file zum lesen nicht &ouml;ffnen<br>;\n");

Function TRUE/false return values

Function `TRUE`/false return values