php search array key and get value

Question

I was wondering what is the best way to search keys in an array and return it s  value  Something like array search but for keys  Would a loop be the best way   Array    Array  20120425    gt  409  20120426    gt  610  20120427    gt  277        20120428    gt  114  20120429    gt  32  20120430    gt  304        20120501    gt  828  20120502    gt  803  20120503    gt  276  20120504    gt  162    Value I am searching for   20120504

User · Accepted Answer

The key is already the     ehm     key  echo  array 20120504     If you are unsure  if the key exists  test for it   key   20120504   result   isset  array  key      array  key    null    Minor addition    result     array  key     null    One may argue  that   is bad  but keep it serious  This is more readable and straight forward  isn t   Update  With PHP7 my previous example is possible without the error-silencer   result    array  key     null

User · Answer

lt  php     Checks if key exists  doesn t care about it s value       link http   php net manual en function array-key-exists php if  array key exists 20120504   search array       echo  search array 20120504         Checks against NULL     link http   php net manual en function isset php if  isset  search array 20120504        echo  search array 20120504         No warning or error if key doesn t exist plus checks for emptiness      link http   php net manual en function empty php if   empty  search array 20120504        echo  search array 20120504        gt

User · Answer

Here is an example straight from PHP net   a   array       one    gt  1       two    gt  2       three    gt  3       seventeen    gt  17     foreach   a as  k   gt   v        echo    a  k    gt   v  n       in the foreach you can do a comparison of each key to something that you are looking for

User · Answer

array search  20120504   array keys  your array

[php] php search array key and get value

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