var_dump(abs(-12 ; // int(12 var_dump(abs("-12.22" ; // float(12.22 var_dump(ceil(2 ; // floa...
看看下面几个算式,你知道精确答案吗?$aaaa=442;$bbbb='442';var_dump(is_int(442 ;echo'<br>';var_dump(is_int(4.42 ;ec...
is_intis_int (字面意思) — 检测变量的类型是否为整数is_int描述is_int ( mixed $var : bool「is_int 函数参数可以稠浊类型“稠浊类型:一个参数可以接管多种不同的类型”;返...
$a = \"大众2\"大众;$b = 2;$c = $a + $b;var_dump($c ;//4---------------------------------------$a = \公众2abc...
$a = \公众2\"大众;$b = 2;$c = $a + $b;var_dump($c ;//4---------------------------------------$a = \"大众2abc...
$a = \"大众2\"大众;$b = 2;$c = $a + $b;var_dump($c ;//4---------------------------------------$a = \"...
$a = \"大众2\"大众;$b = 2;$c = $a + $b;var_dump($c ;//4---------------------------------------$a = \"...
$a = \"大众2\"大众;$b = 2;$c = $a + $b;var_dump($c ;//4---------------------------------------$a = \"...
$a = \公众2\"大众;$b = 2;$c = $a + $b;var_dump($c ;//4---------------------------------------$a = \公众2abcd\&quo...
$a = \"大众2\公众;$b = 2;$c = $a + $b;var_dump($c ;//4---------------------------------------$a = \"大众2abc...
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