array_push unexpect '=>' (T_DOUBLE_ARROW), expecting ',' or ')'

Question

php使用array_push推送关联数组,出现错误

array_push Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ',' or ')' in php_array_foreach.php on line 3

code

<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43","tom"=>"30");
array_push($age,'tom'=>"20");
foreach($age as $x=>$x_value){
  echo "Key=" . $x . ", Value=" . $x_value;
  echo "<br>";
}
?>

错误的代码是

array_push($age,'tom'=>"20");

如何将一个关联元素推送到关联数组中

Answer 1

你使用的是关联数组，因此你只需设置如下键值对。

$age['tom']="30";

Answer 2

$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43","tom"=>"30");
array_merge($age,['tom'=>"20"]);//或者
$age = $age + ['tom' => 20];