Float Precision Loses Payment Company $1.2M Over 3 Years?!
FLOAT PRECISION DISASTER! Used float for money math! $0.02 rounding error per customer! 470K customers * $0.07 error = $1.27M stolen! Class action lawsuit! CFO FIRED! $4.5M total cost!
#php #phpdisaster #floatprecision #moneyloss #roundingerror #paymentfailure #productionbug #phpshorts #phpwtf #$1.2mlost #careerending #bcmathrequired
PHP Array Union vs Merge Trap
Stop scrolling! PHP + and array_merge() work completely differently. See the difference with duplicate keys. The result is SHOCKING!
#php #phptricks #codingtips #programmingtutorial #phparrayunion #arraymerge #arrayoperations #phpquiz #codingchallenge #phpshorts #phparrays #arrayfunctions
Session Race Condition Charges 47,000 Cards TWICE?!
SESSION RACE DISASTER! Flash sale network lag creates 340ms race condition! 47K customers charged TWICE ($299.99 x 2)! $14.1M overcharged! Payment processor SUSPENDED account! CTO RESIGNED!
#php #phpdisaster #session #racecondition #doublecharge #paymentfailure #productionbug #phpshorts #phpwtf #financialdisaster #careerending #flashsale
PHP Array Access on Strings
Can you solve this? PHP lets you access strings like arrays. See what 'Hello'[1] returns. The behavior is WILD!
#php #phptricks #codingtips #programmingtutorial #phpstringaccess #stringindexing #arrayaccess #phpquiz #codingchallenge #phpshorts #stringmanipulation #phpstrings
PHP Anonymous Class Trick
Wait for the reveal! PHP anonymous classes create objects on the fly. See new class {}. This will change your code style!
#php #phptricks #codingtips #programmingtutorial #phpanonymousclasses #php7 #objectcreation #phpquiz #codingchallenge #phpshorts #phpmodern #classes
PHP Closure Variable Binding
Wait for the reveal! PHP closures capture variables differently than you think. See what happens with use(). This changes everything!
#php #phptricks #codingtips #programmingtutorial #phpclosures #anonymousfunctions #variablebinding #phpquiz #codingchallenge #phpshorts #phpadvanced #lambdafunctions
PHP == vs === Type Juggling Trap
STOP! PHP == does type juggling that will break your code. See '0' == false and 0 == 'false'. The results are INSANE!
#php #phptricks #codingtips #programmingtutorial #phptypejuggling #phpcomparison #==vs=== #phpquiz #codingchallenge #phpshorts #phpbugs #typecoercion
PHP Bitwise Operators on Strings
Can you guess this? PHP bitwise operators work on strings in unexpected ways. See 'A' & 'B' and 'A' | 'B'. The result is CRAZY!
#php #phptricks #codingtips #programmingtutorial #phpbitwiseoperators #stringoperations #bitwiseoperations #phpquiz #codingchallenge #phpshorts #phpweird #operators
PHP array_filter Without Callback
PHP just did this! array_filter() without callback removes falsy values. See what gets filtered. Perfect for data cleaning!
#php #phptricks #codingtips #programmingtutorial #phparrayfilter #arrayfunctions #falsyvalues #phpquiz #codingchallenge #phpshorts #arraymanipulation #phparrays
PHP Variadic Functions Power
Watch this! PHP variadic functions accept unlimited arguments. See function sum(...$nums). Perfect for flexible APIs!
#php #phptricks #codingtips #programmingtutorial #phpvariadicfunctions #functionarguments #phpfunctions #phpquiz #codingchallenge #phpshorts #phpadvanced #flexiblefunctions
Turbo Learn PHP