弧
number
abs ( mixed number )
把计 number 荡癸璝狦把计 number
琌 float玥摸琌 float玥
integer float 硄盽ゑ integer Τ絛瞅
ㄒ 1. abs()
<?php $abs = abs(-4.2); // $abs = 4.2; (double/float) $abs2 = abs(5); // $abs2 = 5; (integer) $abs3 = abs(-5); // $abs3 = 5; (integer) ?>
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