Hai cercato la traduzione di undefined da Ebraico a Inglese

undefined type of a variable
no learned functions

if the array is changed, the behavior of this function is undefined.
if the array that array_walk() is applied to is changed, the behavior of this function is undefined, and unpredictable.

everytime an undefined class should be instanciated, it 'll be called.
also note that the directive unserialize_callback_func directive became available in php 4.2.0.

qlibrary:: resolve_ sys: symbol "% 1" undefined in% 2 (% 3)
cannot resolve symbol "%1" in %2: %3

for this reason, as of php 3.0.12 and php 4.0b3-rc4, the result of this automatic conversion is considered to be undefined.
php 4 introduced the new curly bracket syntax to access characters in string, use this syntax instead of the one presented above:

?php / / redefine the user error constants - php 4 only define (fatal,e_user_error); define (error,e_user_warning); define (warning,e_user_notice); / / set the error reporting level for this script error_reporting (fatal _bar_ error _bar_ warning); / / error handler function function myerrorhandler ($errno, $errstr, $errfile, $errline) {switch ($errno) {case fatal: echo "b fatal / b [$errno] $errstr br \n"; echo" fatal error in line ".$errline. "of file ".$errfile; echo", php ".php_version. "(".php_os .") br \n"; echo "aborting... br \n"; exit 1; break; case error: echo" b error / b [$errno] $errstr br \n"; break; case warning: echo "b warning / b [$errno] $errstr br \n"; break; default: echo "unkown error type: [$errno] $errstr br \n"; break;}} / / function to test the error handling function scale_by_log ($vect, $scale) {if (!is_numeric($scale) _bar_ _bar_ $scale = 0) trigger_error("log(x) for x = 0 is undefined, you used: scale = $scale", fatal); if (!is_array($vect)) {trigger_error("incorrect input vector, array of values expected", error); return null;} for ($i=0; $i count($vect); $i++) {if (!is_numeric($vect[$i])) trigger_error("value at position $i is not a number, using 0 (zero)", warning); $temp[$i] = log($scale) * $vect[$i];} return $temp;} / / set to the user defined error handler $old_error_handler = set_error_handler("myerrorhandler"); / / trigger some errors, first define a mixed array with a non-numeric item echo "vector a\n"; $a = array(2,3 ,"foo",5.5,43.3,21.11); print_r($a); / / now generate second array, generating a warning echo "----\nvector b - a warning (b = log(pi) * a)\n"; $b = scale_by_log($a, m_pi); print_r($b); / / this is trouble, we pass a string instead of an array echo "----\nvector c - an error\n"; $c = scale_by_log("not array",2.3); var_dump($c); / / this is a critical error, log of zero or negative number is undefined echo "----\nvector d - fatal error\n"; $d = scale_by_log($a, -2.5);?
?php / / redefine the user error constants - php 4 only define ("fatal",e_user_error); define ("error",e_user_warning); define ("warning",e_user_notice); / / set the error reporting level for this script error_reporting (fatal _bar_ error _bar_ warning); / / error handler function function myerrorhandler ($errno, $errstr, $errfile, $errline) {switch ($errno) {case fatal: echo "b fatal / b [$errno] $errstr br \n"; echo" fatal error in line ".$errline. "of file ".$errfile; echo", php ".php_version. "(".php_os .") br \n"; echo "aborting... br \n"; exit(1); break; case error: echo" b error / b [$errno] $errstr br \n"; break; case warning: echo "b warning / b [$errno] $errstr br \n"; break; default: echo "unkown error type: [$errno] $errstr br \n"; break;}} / / function to test the error handling function scale_by_log ($vect, $scale) {if (!is_numeric($scale) _bar_ _bar_ $scale = 0) trigger_error("log(x) for x = 0 is undefined, you used: scale = $scale", fatal); if (!is_array($vect)) {trigger_error("incorrect input vector, array of values expected", error); return null;} for ($i=0; $i count($vect); $i++) {if (!is_numeric($vect[$i])) trigger_error("value at position $i is not a number, using 0 (zero)", warning); $temp[$i] = log($scale) * $vect[$i];} return $temp;} / / set to the user defined error handler $old_error_handler = set_error_handler("myerrorhandler"); / / trigger some errors, first define a mixed array with a non-numeric item echo "vector a\n"; $a = array(2,3 ,"foo",5.5,43.3,21.11); print_r($a); / / now generate second array, generating a warning echo "----\nvector b - a warning (b = log(pi) * a)\n"; $b = scale_by_log($a, m_pi); print_r($b); / / this is trouble, we pass a string instead of an array echo "----\nvector c - an error\n"; $c = scale_by_log("not array",2.3); var_dump($c); / / this is a critical error, log of zero or negative number is undefined echo "----\nvector d - fatal error\n"; $d = scale_by_log($a, -2.5);?