How to add elements to an empty array in PHP

Question

If I define an array in PHP such as  I don t define its size     cart   array      Do I simply add elements to it using the following    cart     13   cart      foo    cart     obj    Don t arrays in PHP have an add method  for example  cart add 13

User · Answer

products arr  passenger details   array    array push  products arr  passenger details   array  Name   gt  Isuru Eshan   E-Mail   gt  isuru eshan gmail com     echo   lt pre gt    echo json encode  products arr JSON PRETTY PRINT   echo   lt  pre gt       OR   countries   array     countries  DK     array  code   gt  DK   name   gt  Denmark   d code   gt   45     countries  DJ     array  code   gt  DJ   name   gt  Djibouti   d code   gt   253     countries  DM     array  code   gt  DM   name   gt  Dominica   d code   gt   1    foreach   countries as  country   echo   lt pre gt    echo print r  country   echo   lt  pre gt

User · Answer

REMEMBER  this method overwrites first array  so use only when you are sure    arr1    arr1    arr2     see source

User · Answer

When one wants elements to be added with zero-based element indexing  I guess this will work as well      adding elements to an array with zero-based index  matrix  array     matrix count  matrix     element 1    matrix count  matrix     element 2        matrix count  matrix     element N

User · Answer

Both array push and the method you described will work    cart   array     cart     13   cart     14     etc    Above is correct  but below one is for further understanding  cart   array    for  i 0  i lt  5  i          cart      i      echo   lt pre gt    print r  cart   echo   lt  pre gt      Is the same as     lt  php  cart   array    array push  cart  13   array push  cart  14       Or   cart   array    array push  cart  13  14     gt

User · Answer

Both array push and the method you described will work   customArray   array     customArray     20   customArray     21   Above is correct  but below one is for further understanding  customArray   array    for  i 0  i lt  12  i          cart      i      echo  quot  lt pre gt  quot   print r  customArray   echo  quot  lt  pre gt  quot

User · Answer

Based on my experience  solution which is fine the best  when keys are not important   cart        cart     13   cart      quot foo quot    cart     obj

User · Answer

It s better to not use array push and just use what you suggested  The functions just add overhead     We don t need to define the array  but in many cases it s the best solution   cart   array       Automatic new integer key higher than the highest    existing integer key in the array  starts at 0   cart     13   cart      text      Numeric key  cart 4     object     Text key  assoc   cart  key      test

User · Answer

cart   array     cart     11   cart     15      etc    Above is correct  but below one is for further understanding   cart   array    for  i   0   i  lt   5   i                cart      i       if you write  cart     i   you will only take last  i value as first element in array     echo   lt pre gt    print r  cart   echo   lt  pre gt

User · Answer

You can use array push  It adds the elements to the end of the array  like in a stack   You could have also done it like this    cart   array 13   foo    obj

[php] How to add elements to an empty array in PHP?

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