php基础知识(四)数组-白红宇

php基础知识(四)数组

阅读量：6281 次

发布时间：2019-06-22

本文共 1602 字，大约阅读时间需要 5 分钟。


     php数组");    $ary =array("12",'3d','fs3');  //Array  echo $ary.'
';    //格式化后输出 Array ( [0] => 12 [1] => 3d [2] => fs3 )  print_r($ary);  printf($ary.'
');  print_r($ary[1]."
") ;    //数组有相同元素，覆盖  $a1 = array("1"=>"PHP","1"=>"Perl","2"=>"JAVA","6"=>"Ruby");    print_r($a1);  array_push($a1,"Ruby");  print_r($a1);//Array ( [1] => Perl [2] => JAVA [6] => Ruby [7] => Ruby )  print_r(array_unique($a1));//Array ( [1] => Perl [2] => JAVA [6] => Ruby )    /**   * 关联数组   */  $glAry =array("o"=>1,"t"=>2,"tr"=>'44r');    print_r($glAry);  echo $glAry["o"];  //向数组中添加元素  $glAry["s"]="ds";  print_r($glAry);    echo '数组元素的个数：'.count($glAry)."
";  //搜索元素，找到返回索引值  echo array_search("1", $glAry).'
';//o  //取数组中最后一个元素  echo   array_pop($glAry).'
';//ds  //数组末尾添加元素，返回元素的索引  echo array_push($glAry,'refre').'
';//4  print_r($glAry);//Array ( [o] => 1 [t] => 2 [tr] => 44r [0] => refre )     echo '二维数组
';  /**   * 二维数组的定义   */  $tAry = array(array("3","43","f4"),array("32","f3",'php'));  print_r($tAry);  echo '
';  foreach ($tAry as $i){  	 foreach ($i as $j){  	 	echo $j;  	 }  	 echo "
";  }    echo '数组元素的总个数:'.count($tAry,COUNT_NORMAL).'
';//2  echo '数组元素的总个数:'.count($tAry,COUNT_RECURSIVE).'
';//8    /**   * 将字符串转化为数组   * explode();   */   $str ="i , love ,you";   //Array ( [0] => i , love ,you )   print_r(explode(".", $str));      //Array ( [0] => i [1] => love ,you )    print_r(explode(",", $str,2));     // Array ( [0] => i [1] => love [2] => you )   print_r(explode(",", $str));  /**   * 将数组转化为字符串   */    $strT = implode(",", $a1);   echo $strT;