How Can I Efficiently Sort Arrays and Data in PHP?

How Can I Sort Arrays and Data in PHP?

Basic One-Dimensional Arrays

• Use PHP's built-in functions such as sort, rsort, asort, arsort, natsort, natcasesort, ksort, and krsort.

Multi-Dimensional Arrays, Including Arrays of Objects

• Define a custom comparison function (cmp) that returns a value based on the sorting criteria.
• Use the usort, uasort, or uksort functions.

Sorting By Multiple Fields

• Specify multiple sorting criteria in the cmp function.

Sorting Into a Manual Order

• Use array_search within the cmp function to establish a fixed ordering.

Sorting One Array Based on Another

• Use the array_multisort function to sort one array based on the values of another.

Custom Numeric Comparisons

• Use mathematical operations in the cmp function to compare numerical values.

Objects

• Use the -> operator to access object properties within the cmp function.

Functions and Strings

• Use functions and the string comparison function strcmp within the cmp function.

Spaceship Operator (PHP 7 Only)

• Use the spaceship operator to unify equal/smaller/larger than comparisons.

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