<?php $var1 = '123'; $var2 = '456A'; $var3 = '78'; $var4 = (int) $var2; $var5 = (float) $var2; $var6 = $var2 + 0; $var7 = 0 + $var2; # the weird bit: say("start weird bit"); say("string comparison?"); comparevar("var2 and var3", $var2, $var3); comparevar("var3 and var2", $var3, $var2); say("number comarison?"); comparevar("var3 and var4", $var3, $var4); comparevar("var4 and var3", $var4, $var3); comparevar("var2 and var4", $var2, $var4); comparevar("var4 and var2", $var4, $var2); if (($var2 < $var3) and ($var4 > $var3) and ($var2 == $var4)) { say("($var2 < $var3) and ($var4 > $var3) and ($var2 == $var4)"); say("is this a bug?"); } say("end weird bit"); comparevar("var1 and var2", $var1, $var2); comparevar("var3 and var1", $var3, $var1); comparevar("var2 and var1", $var2, $var1); comparevar("var4 and var5", $var4, $var5); comparevar("var5 and var6", $var5, $var6); comparevar("var6 and var7", $var6, $var7); comparevar("var2 and var4", $var2, $var4); comparevar("var2 and var5", $var2, $var5); comparevar("var2 and var6", $var2, $var6); function comparevar($tag, $arg1, $arg2) { echo("$tag: "); if ($arg1 === $arg2) { say("$arg1 === $arg2"); } if ($arg1 == $arg2) { say("$arg1 == $arg2"); } if ($arg1 < $arg2) { say("$arg1 < $arg2"); } if ($arg1 > $arg2) { say("$arg1 > $arg2"); } } function say($str) { echo $str, "\n"; }
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