php - Comparing 2 different values returns true -

php - Comparing 2 different values returns true -

this question has reply here:

why (0 == 'hello') homecoming true in php? 5 answers

i came across while playing php

$test1 = '123abc'; $test2 = 123; var_dump($test1); echo "<br />"; var_dump($test2); echo "<br />"; $test3 = ($test1 == $test2) ? true : false; var_dump($test3);

this resulted in:

string(6) "123abc" int(123) bool(true)

could explain why $test3 came out true?

using "===" create false due comparing string int.

also notice if forcefulness (string)$test2 give me expected false, , forcing (int)$test1 returns expected true;

does mean $test3 homecoming true because php automatically converted $test1 int before comparison?

look @ the details here:

a string' == 0 evaluates true because any string converted integer when compared integer. if php can't convert string evaluated 0. 0 equal 0, equates true.

also, in the official php documentation:

to explicitly convert value integer, utilize either (int) or (integer) casts. however, in cases cast not needed, since value automatically converted if operator, function or command construction requires integer argument.

php