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December 29, 2015 08:19
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Why PHP is weird
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| if ("false" == true) echo "true\n"; | |
| // => true | |
| if ("false" == false) echo "true\n"; | |
| // => false | |
| if ("false" == 0) echo "true\n"; | |
| // => true, wtf | |
| if (false == 0) echo "true\n"; | |
| // => true, as expected | |
| // so "false" = true && "false" = 0, so "false" is true and | |
| // false is false and we haven't even discussed identity, yet | |
| if ((string)"false" === (int)0) echo "true\n"; | |
| // => false, ...ok... | |
| if ("0" === 0) echo "true\n"; | |
| // => false | |
| if ("false" === false) echo "true\n"; | |
| // => false | |
| if ((int)"0" === 0) echo "true\n"; | |
| // => true, with type coercion |
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