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45 lines
759 B
Plaintext
45 lines
759 B
Plaintext
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logische Operatoren
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====================
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and = beide true
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or = eines oder beide true
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xor = eines der beiden true (entweder oder)
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nor = nicht eines oder beide true (or umgekehrt)
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nand = nicht beide gleich (and umgekehrt)
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xnor = gleichheit
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and or xor nxor nand nor
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--------------------------------------------
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00 0 0 0 1 1 1
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01 0 1 1 0 1 0
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10 0 1 1 0 1 0
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11 1 1 0 1 0 0
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in PHP funktionieren nxor, nand und nor nicht!!!
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Vergleichsoperatoren
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====================
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gleich:
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10 == 10
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"PHP" == "PHP"
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ungleich:
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"PHP" != "CGI"
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"10 != 10
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gr<EFBFBD>sser / kleiner als:
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15 > 10
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15 < 15
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gr<EFBFBD>sser / kleiner gleich:
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15 >= 15
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15 <= 10
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