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# Execute and compare PHP Online
Sandbox
PHP Functions
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OnlinePHP.io
Online Tools
Filesystem
OnlinePHP.io - Filesystem
file_get_contents
- Reads entire file into a string
file_put_contents
- Write data to a file
Search Functions
Online tool Categories
Arrays
Cryptography and Hashing
Custom tools
Date and Time
Filesystem
General
Math
Output Buffering
Password Hashing
Regular Expressions
String Manipulation
Urls
Last used PHP functions
sandbox
(1 second ago)
gmmktime
(4 seconds ago)
gmstrftime
(29 seconds ago)
strcmp
(1 minute ago)
time
(3 minutes ago)
Most used PHP functions
sandbox
(98521123)
preg_replace
(192579)
json_encode
(131301)
preg_match
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unserialize
(87275)