案例:php案例     状态:不可编辑再运行    进入横版
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<!DOCTYPE html>
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<html>
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<body>
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<?php
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$num1 = 123456789;
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$num2 = -123456789;
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$char = 50; // The ASCII Character 50 is 2
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// 注释:The format value "%%" returns a percent sign
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printf("%%b = %b <br>",$num1); // Binary number
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printf("%%c = %c <br>",$char); // The ASCII Character
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printf("%%d = %d <br>",$num1); // Signed decimal number
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printf("%%d = %d <br>",$num2); // Signed decimal number
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printf("%%e = %e <br>",$num1); // Scientific notation (lowercase)
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printf("%%E = %E <br>",$num1); // Scientific notation (uppercase)
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printf("%%u = %u <br>",$num1); // Unsigned decimal number (positive)
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printf("%%u = %u <br>",$num2); // Unsigned decimal number (negative)
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printf("%%f = %f <br>",$num1); // Floating-point number (local settings aware)
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printf("%%F = %F <br>",$num1); // Floating-point number (not local settings aware)
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printf("%%g = %g <br>",$num1); // Shorter of %e and %f

 运行结果 
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