<?php $cars = array("Volvo","BMW","Toyota"); echo count($cars);?>
遍历数组
<?php $cars = array("Volvo","BMW","Toyota"); //第一种办法 $arrlength = count($cars); for($x = 0 ;$x < $arrlength ;$x++) { echo $cars[$x]; echo "<br>"; } //第二种办法 foreach ($cars as $key => $value){ echo $value; echo "<br/>"; }?>
array_chunk () 函数 (把数组分割为带有两个元素的数组块)
<?php $cars = array("Volvo","BMW","Toyota","Honda","Mercedes","Opel"); print_r(array_chunk($cars,2));?>
array_keys () 函数 (返回包含数组中所有键名的一个新数组)
<?php $a = array("Volvo"=>"XC90","BMW"=>"X5","Toyota"=>"Highlander"); print_r(array_keys($a));?>
array_push () 函数 (向数组尾部插入 “blue” 和 “yellow”)
<?php $a = array("red","green"); array_push($a,"blue","yellow"); print_r($a);?>
array_pop () 函数 (删除数组中的末了一个元素)
<?php $a = array("red","green","blue"); array_pop($a); print_r($a);?>
array_reverse () 函数 (返回翻转顺序的数组)
<?php $a = array("a"=>"Volvo","b"=>"BMW","c"=>"Toyota"); print_r(array_reverse($a));?>
sort () 函数 (对数组中的元素按字母进行升序排序)
<?php $cars = array("Volvo","BMW","Toyota"); sort($cars);?>
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